Wow, interesting point. I guess by default she is now especially since Darth Vader and Darth Maul are both generally accepted as bad guys (in the park.) However I don't think she will be marketed as so, but probably with the upcoming Ep VII I could see the female role (which if they follow suit in the other trilogies will be a princess/queen/royalty of some sort) at least having meet and greets.
Many things the future holds. Growth there will be. New lands to visit. Be there, in person, Princess Leia will. Beloved she will continue to be. The force has always been strong with her... Amazing sights and sounds and events are ahead. Yoda too will appear and Jedi Training will continue to grow... Flights to whole new worlds await...new stories will unfold.
Meanwhile, I would not be surprised if she...and other characters from the Star Wars Universe began showing up in Tomorrowland...even though we all know these events occurred a long, long time ago in a Galaxy far, far away... And...in Orlando...at Hollywood Studios...growth there will be.
Adios for now. Talk to ya on down the trail.
Wild Ol' Dan