i think sasuke will turn evil but still have some emotions toward konoha and everyone in it, i just can't see him becomming like oro or something.

i think naruto will be the one to take out kabuto, it seems they have some kind of rivalry now since their meeting with the 3 sannin.

as for oro i think its too early to tell who is gonna kill him, i can see him as a character being around for a long time.