2 Gameplay Questions...

So I have 2 big questions about gameplay that hopefully can be answered!

The first is can the playsets be more than one player? For example, could I be playing as Sulley while my buddy plays as Mike and we do the playset missions?

The second is will the characters have some sort of health bar in toybox mode? Everyones playing around with the idea of a Disney Smash Bros type play in toybox which I would be stoked on, but does anyone know if you can actually fight other players in toybox and diminish their health? Otherwise it seems like the only way of determining a winner of a fight is by knocking one another floating block or a building!