Maestro, Arpeggio, and Larry would be my picks for walk-around characters! They probably wouldn't be able to meet right in front of the facade due to the Peanuts licensing agreement, but that little path near the exit and/or on International Street would be great. For Maestro I wonder if they would go for a human character (like in Phantom Theater Encore), puppets (obviously in the case of Larry and Archie), or something more like the 1992 walk-around Maestro?