Phoeeeeeniiiiix, Krylo's being all mean and sarcastic to me! Make him stop!
Exaggerated childishness aside, I might consider a stealth-heavy, nimble thief/assassin, with a heavy interest in combat tactics. Does that sound feasible? I'm still working my way through.
And I'm disappointed that "Become ruler of galaxy" isn't listed among possible motivations. I like playing megalomaniacs...