What it says in the title. Not toys, or themes, or playsets, but what new things do you want to be able to DO in Disney Infinity?
I'd like the ability to give a toy box a goal. Some way to win/end it. Right now, it seems like you reach the end of an obstacle course, you get fireworks... and then you just kinda hang around.
I'd also like NPCs to be given more to do rather than just wander around. Give us the ability to give them (text only) dialogue, or treat them as Creativitoys or something.