Here's my two cents.
If a possible KOTOR3 has Revan or the exile as the main character then I'm not getting the game. I pray that KOTOR3 will actually be a real roleplaying game where my character and his fate won't be etched into stone right from the beginning, apart from a tiny choice of whether or not I want to follow the light side or the dark side. (The journey is pretty much exactly the same regardless, which makes that choice worthless anyway. Oh wait, yippee, I got a different ending.)
And for KOTOR3 to be an actual roleplaying game I should be getting to make a character that I can actually call mine, from the beginning and to the end. No stupid turnaround where I get to hear that my character is actually someone else, no grandma dragging me into something I don't want to do.
Basically, just let me make my own damned character.