This thread appears to be dormant for some time now
. Let me jumpstart it with some ideas from the combat perspective.
1) In my opinion, each party member (Jedi or not) should have some distinct combat stances or methods of fighting different from the others, like how they wield a weapon (be it sword or gun) for example.
2) Another is when someone uses Force lightning on you, you should be able to use your lightsaber to absorb or deflect the lightning depending on your saving throws. Like if your saving throw is equal to the attack throw of the enemy using Force lightning on you, you will be able to absorb it. Any higher and you'll deflect the force lightning back to the recipient.
3) Give each team member some signature moves to make them stand out from each other.
4) Lastly, blaster rifles should display the upgrades you installed on your rifle. Realised that they all looked the same whether you upgrade them or not. Furthermore, the blaster rifle should have an aim feature like Fable: TLC's so that you can make quick and clean kills (headshots, more likely).