I think, if they release KotOR III, the game should definitely include:
A story which involves Revan in some way (though not as a PC)
A story which maybe involves the Exile
A story which involves a reason for travelling to multiple planets
The Ebon Hawk as the player's ship
HK-47 and T3-M4 as PCs
At least one other recurring character
As such, a likely plot that I can think of involving those would be
that you're travelling to all of the planets on which Revan as the
Dark Lord had his many strongholds (as is mentioned in KotOR II),
where, like KotOR I, you'd gain information at each as to his current
whereabouts. This could then culminate in a confrontation at the final
planet. The Ebon Hawk, with T3-M4 and HK-47 onboard may have been
captured by the Jedi, and HK-47 would be again major to the plot, as
he could have been re-programmed by the Jedi Council to lead the PC to
each planet, as he'd have knowledge of them.
Also, as a returning character, Jolee's the most likely choice from
KotOR I, as he still has a huge backstory we haven't heard of yet, and
is nicely grey in terms of the force. He could also give information
and suggestions as to the path Revan took, as he knew him quite well,
and could also reveal more about Revan as a character, like Kreia did
in KotOR II. They could fit him into the story with either LS or DS
Revan, as if Revan were LS, Jolee could have escaped the Jedi purge as
he was Exiled from the Jedi long before the Mandalorian Wars, and if
Revan were DS, they could maybe pass his death off as losing an arm or
something, in which case he could play differently, maybe with a
Bao-Dur style replacement, or the like.
It's unlikely they'll include Bastila as a PC, but if they go with
that idea, she'll probably integrate into the story in some way, as
she'll be trying to find Revan too. Thus, if Revan were set to DS,
she'd probably fight you, but if he were set to LS, she'd probably aid
you at points, and you'd have a different antagonist.
Carth they *could* add, but it'd be hard to implement that as for
Carth, Revan was very different when LS/DS, whereas Jolee pretty much
took things as they came with Revan, aside from the split at the end.
If Jolee were included, we'd see more of the very grey, borderline
Revan, as implied in KotOR II.
They probably won't include Canderous, as they've covered pretty much
everything they can for him, and likewise, they probably won't include
a Wookie, as they've covered pretty much all of the things a Wookie
could do.
Juhani again is unlikely, mostly as she's not very important to
Revan's plot, and we've seen all of her backstory. Also, she could've
been killed twice, so it'd be hard to implement her past, and also in
one of those, she never had any time to get to know Revan.
Like Carth, they *Could* implement Mission, although writing off the
'death' of a non-Jedi as an injury would be harder to believe than
that of such an adept as Jolee. However, she'd be much more flat as a
character than Jolee, in that we've heard her entire backstory, and
she never had that much to do with Revan's plot.
If they bring back a character from KotOR II aswell, I'm less sure of
who it's likely to be. It probably won't be Mira or Hanharr, as one
killed the other at the end of KotOR II, and that Exile only had one
of them in his party officially. Likewise with Handmaiden and
Disciple.
It probably won't be G0-T0, as he didn't have much to say, unless they
decide to include a major plot element with a large focus on droids
(such as M4-7Cool, in which case he'd have more input and more of a
story. It's likely they'd have a third droid along with HK-47 and
T3-M4, and the designers would likely go for a different one, just so
players had a new droid character. In fact, they could always use all
of the story G0-T0 had regarding M4-78 in a new character.
It probably won't be Canderous, for reasons mentioned above.
Kreia is dead, and in terms of the story, she should definitely stay
that way, as you prefer your end-of-game bosses to stay dead.
That leaves Atton, Bao-Dur and Visas. All of whom are killed in the
RP, though it's unlikely that the developers of KotOR III will deal
with the original vision of KotOR II. Atton is least likely of those
to be included, as we know all about his backstory and have pretty
much exhausted his character. Visas my be interesting in that she has
had a history of serving Dark Lords, though again, she doesn't have
much backstory. Bao-Dur, however, would be the most likely choice of
those three. He has many experiences of the Mandalorian Wars, and of
serving under both Revan and the Exile. If the plot were to include
more about the Jedi Exile, Bao-Dur would be a very natural choice for
developing the Exile's character, although he would be quite similar
to Jolee in terms of dark/light. He could appear as a council member
though, maybe one of those who gives the PC his task of finding Revan,
and giving him the Ebon Hawk with re-wired HK-47.
All other main characters from KotOR I are deceased, as are all of the
hidden Jedi from KotOR II. Atris definitely could play a role, as we
know she's been taken by the Darkside before, and also has known Exile
and was a teacher of Revan, much like Kreia was. However, like Jolee,
she's been 'killed', and it'd be hard to explain that away, unless
there's some plot element which could've caused those two to survive.
Maybe a Jedi healer, or some outside party, who believes that the PC
in KotOR III needs to go on this quest, and as such followed Revan and
the Exile behind the scenes of the first two games, and decided those
characters had to live. However, it would be great to see Atris, as
there's loads of backstory she could have still, and she'd be a very
interesting character, especially in terms of Jolee, as there's a
difference in opinion regarding the Jedi Council.
In terms of planets, we know that Revan, after he got his full memory
back after KotOR I, returned at a number of strongholds. We also know
that, pre-KotOR I, he protected planets vital to the survival of the
Republic. Thus, we could have any planets from a vast range. As with
the previous games, there should be a wide range, including one very
Sith or DS planet, a planet which includes (or is) a huge city, and
one where the Jedi stay. KotOR II included planets repeated from KotOR
I, so maybe we'll see repeats. Also, in KotOR I, we visited planets
from the movies, and this should happen in KotOR III also.
It'd be a nice nod to those people who know of the missing content to
see those planets in KotOR III. Sleheyron would work fine, as it was a
large production facility which would've attracted Revan's interest
(in fact it'd be very nice to actually find a Star Map there, which'd
be unnecessary to the plot, but would provoke some interesting
dialogue about how the Dantooine one never showed this one, probably
as all Star Maps were damaged - this also would fit in with Jolee as a
main character.)
M4-78 could be included, as it has its own story and such, and a droid
planet would have been very useful to Revan. Also, as we know, Revan
built HK-47, so we know he has an interest in droids. We also know
that M4-78 was occupied by Sith at one point - these could've been
sent on Revan's orders. M4-78 could also be used to restore the HK
factory, if the designers so chose.
In terms of repeated planets, Dantooine's been totally exhausted of
possibility. As has Manaan and Kashyyyk. Korriban has been exhausted
too, with two playthroughs, as has Tattooine, with one, although we
know that originally caves and a Sarlaac were going to be included on
Tattooine. However, even with the Sarlaac restored on Tattooine,
there'd still be very little to do there aside from the part actually
inside Revan's storehouse, so that's unlikely to return.
There's nothing more that you could add to Telos, or Nar Shadaa,
Onderon or Dxun. Thus, unfortunately, it looks unlikely that we'll see
a return of any planet from previous KotOR games.
However, there's quite a lot of choice in terms of planets from the movies.
Alderaan would be a nice contrast to the two industrial planets named
above, as it was supposedly a beautiful place, and has a nice
difference in terms of grasslands and cities. It could also become the
homeplace for the new Jedi Council set up by the remnants of the
Exile's party (and possibly Bastila, if Revan is set to LS).
Yavin IV *could* be included, though it's been touched upon in so many
games that its story is pretty much all told. However, it'd fit the
mold of very Darkside, Sith planet, as it included Naga Sadow's
temple.
Bespin could be a city planet, although it's rather dull to look at,
and very similar to Taris.
There'd be far too little to do on Dagobah, and likewise with Hoth,
unless they included some sort of settlement there, but even then,
there'd be little to work with. Also, Endor would be too similar to
Kashyyyk from KotOR I.
From the prequel trilogy, we have Naboo, Coruscant, Geonosis, Kamino,
Mustafar and Utapau. Mustafar is very similar to Sleheyron, so if they
were to choose a volcanic planet it could be either, though probably
Mustafar due to its more widespread recognition. Utapau could be
interesting as it tries to stay neutral in the Republic/Sith conflict,
and has some grasslands and plains. It's also interesting as it has
two very separate races living there, with different views and lives,
so some interesting story could be derived from that. Geonosis and
Kamino have very little which could be worked upon.
Naboo would be an excellent planet, as it has plains, cities, and the
huge underwater mazes. It's also very visually appealing, and has much
in the way of galactic politics. Hopefully though, we wouldn't have to
interact with any Gungans. Interestingly, the Gungans were forced
underground many years ago by some creatures who colonised Naboo
before the Republic, known as 'Elders'. These could have been the
Rakata during the time of the Infinite Empire. Naboo could also be the
location for the new Jedi Council.
Coruscant could also be such a location, and would be interesting as
it'd be a large city, as we've seen before, but a very wealthy, strong
one, unlike Taris or Nar Shadaa. It's the most likely location for the
new Jedi Council as we know that it eventually ends up being there.
There're lots of interesting plot elements that could occur there, to
do with politics (like the sections in front of the Judges on Manaan),
and such.
I don't see how they'd improve the game mechanic any further - the
addition of breaking down items, skills being more useful, and the
influence system, on top of the system from KotOR I, seem really
unbeatable.
Wow. I didn't expect to write that much!