I've been wondering why they did not work the Force into this game. Seems they could very easily have done so. For example, Luke and Vader might cost a bit more but come with 1 or 2 Force points per game (or maybe their point cost didn't change, but you could chose to purchase Force point upgrades from you squad points -- each Force point would cost 2 points, and Luke could purchase up to 2 and Vader could purchase up to 3… or something like that to balance things out).
You could use Force points to reroll one dice. Or, you could use the Force to lower the difficult of a move (green would stay green, but white could become green, and red could become white). Or, maybe they could move 1 extra straight after their regular move. Doesn't have to be anything too powerful, just something to add a minor twist to the game. Maybe some would cost two Force points and others would cost just one.
Why do you think they didn't include the Force in the game in some way that is a little different than the various actions everyone can take in the game?
Do you have other ideas for house rules about how you can add the Force to the game?