The one thing I like to see is Force usage is more like the PnP game. In the PnP game you have Vitality and Wound scores. Each time you use the force your Vitality goes down. Also anytime you get hit your Vitality goes down. When you get to zero vitality you take wound damage. Wound score equals tot he character's Constitution. If a critical hit is done it does normal weapon damage but it hits directly to the Character's Wound score. When Wound hits zero the character is dead.
It would make things a lot harder and riskier for Force Users and make the game far more challenging than the first. It would also balance non-force users as well with the force users.
Also One more little request. Make character death, as in 0 hit points, mean character death. It was so Final Fantasy in the first KotOR that it was quite stupid.