Yeah, that brings up and interesting question. Orochimaru, lived in Konoha till he was a grown up at least. So don't all Jounins get teams and like 3 genins to teach? So did Orochi just end up with Anko? Or did he maybe have three to start with and get pissed off and eat 2 of them, or send them on suicide missions? Or were the sannin just so beyond everyone that they really only took students that they wanted to instead of team assignments? Personally I would like to see more of their pasts, and the shinobi wars.