I've played White Wolf's system and think its great. The only problem is that the combat system for it is very slow. My personal suggestion would be to come up with a system that would speed up the combat. My friends and I came up with one that elimiated the dodge rolls and instead added it to difficulty of making a hit, with a conversion factor. We also modified the soak rolls, but is been a couple of years since I've played Vampire or Mage and can't really remember anymore exactly how we did it. But I would think that Star Wars would involve even more combat, and therefore combat times would increase dramatically. Just a idea.

My personal RPG favorite for Star Wars was the old D6 version.
But I'd love to see what you've done with Star Wars with the White Wolf system.