You can use both touchscreen and button/D-pad controls completely. I doubt people will need only the d-pad button controls though since people don`t usually have issues with their touch screens.
D-pad = move screen around/control Sissel's spirit in Ghost Mode
A = Trick/Talk
B = Highlight where...
if they get permission from 4j (the studio who helped put minecraft on consoles), they could put the console edition tutorial worlds in the game, as seeds
and i mean all of them (if not, maybe a few highlights, like TU1, TU31, and TU69)