Let the ideas run wild? You asked for it
I would add Grievous too, with 4 sabers and the same Force Powers what Starkiller has. I would also add these Characters from KotOR: Nihilus,Sion,Revan,Bastilla. And Urai Fen FoC. He doesn't have a saber but with Force Powers he would be unstoppable
Okay what else. (Here comes the craziest idea) I would add some kind of "NPC spawn" system like in JA
It would be really fun if you could just choose a map spawn a bunch of enemies and own them
"I've barely eaten anything for many decades now. It feels like my stomach shriveled into my back........though i don't have a stomach or back because i'm a skeleton! Yohohohoho! SKULL JOKE!"
"My eyes have never seen such a pretty woman! But i'm a skeleton so my eyes don't see much."