A change game host option would be nice. almost every night I go to bed before my friends do and they still want to play after im gone, so I can't exit the world since it would be unfair to them. being able to make another friend the host would allow me to leave and not have my ps3 running all night. oh,and pufferfish. add them too.
Screenshots would be an amazing way to branch out to your friends, and even help spread the word about minecraft, considering you can upload pics to FaceBook. People who have friends that have MC tend to go and buy MC