The one thing that struck me as odd with the force powers in KOTOR was that basic force powers became obsolete once you got advanced versions of said power. For example, once you obtained force whirlwind, you could no longer use force push. I don't think it'd be too difficult to have a force power upgrade ADD an advanced ability, rather than replace an existing one.
I mean, yeah force kill is pretty cool and I wouldn't want to give it up, but sometime I just want to choke the guy!
- Fin