If this stuff has been said, just ignore it... i didnt feel like reading 70 pages...
My idea for Kotor III would start off pretty simple... you are a young padawan at the jedi enclave on dantooine... some of the "Lost Jedi" make up the council... Atton, Brianna, Visas (yes, you turned her), Bao-Dur, Mira... curiously absent is Bastila...
Not sure on the story.. of course you are sent to find out what happened to Exile and Revan... why you are chosen to go is a mystery, seeing as you are just a padawan... Unknown to you is the fact that 20 years ago (at the end of Kotor I) Bastila had a child with Revan, before he left (another reason for him leaving.. wanting to save the galaxy for his child)... Your parentage gives those suprise elements along the way... first you find out who your mother is... then you find out who your father is (very star wars)... You find these facts out as you move through the game, eventually going beyond the outer rim to encounter the "true sith'... By this point you are pretty high level and you run into an old friend of ours... Exile... Since you are high level at this point, Exile joins your group... I dont know after that...
I think something that really should be considered is to have group members come and go... just because someone joins you at the beginning of the game, doesnt mean they should be killed in some plot cutscene, then have someone replace them...