I hope the "hero" is again some super-awesome jedi/sith. maybe the offspring of Raven & the exile (which ever is male/female is decided at the start, and if same sex is chosen for both, maybe it's Raven & Bastila, or Carth i guess).
I hope they dive more into the HK issue, the factory that didn't make it to the KOTOR 2 game.
also more development on T3-M4, somethings fishy about it, i think there are hidden memories of Raven/The Exile, good way to tie the 3 games together.
mandalore son/daughter joining the team.
other races in the party
“Death is a natural part of life. Rejoice for those around you who transform into the Force. Mourn them do not. Miss them do not. Attachment leads to jealously. The shadow of greed, that is.” - Yoda