go with me on this, im partially brainstorming...
What if the opening sequence was that u c both revan and exile wherever the new sith are, fighting the sith as LS, and becoming surrounded. It switches to a holocron, and you are only a little kid. Your parents tell you a story about both the exile and revan, while you "correct them" (this chooses the elighnments, genders, party members, and such). This is a bedtime story, and as you sleep your parents are killed by a sith assassin. you never see ur parents faces up until this point, and they are either Mira and Disiple, Visas and Disiple, or Handmaiden and Atton (depending on whether exile was male or female, LS or DS). U learn that ur parents were jedi and the first jedi couple because exile taught them that u could indeed love as 1. Your 2 droids, HK-47 and T3-M4, explain the situation to u, and unlock all the jedi/sith holos they can find, and u "teach" urself to use the force. finally, HK gives u a lightsaber of ur own, and u set off to find ur parents killers and find revan and exile. You find neary all of the old companions of KOTOR l and ll, each giving u more info on their whereabouts. You can be LS or DS, and in the end u meet up with them 2 either:
A: kill both (DS) and rule the sith
B: ally w/ both and kill sith
C: kill the evil 1, either revan or exile
or
D: do part B, but at the last moment, revan and exile are killed in some really cool way and u have 2 fight 1 last massive battle against the entire sith empire on your own (ULTAMITE!!!)
What do u think???