I, too, am looking very forward to Paper Mario 3DS. I've played each of the other three Paper Mario games and love them all. If I had to give a favorite, I would say that The Thousand Year Door was my favorite, primarily because of the atmosphere and all of the little things in the game, particularly Rogueport. You know that when you see an introduced character telling you about the place you're in while two crime syndicate enforcers are shaking down some rival criminal guy in the background, the game is going to be special.
Team Rocket will pay for their crimes.