He should take over Oto. He won't really change anything in Konoha cause there's only two old farts alive still that know about what happened. Plus he would be able to make Oto compete while Konoha doesn't really need him. Imagine Taka creating their own clans in Oto. They would become pretty powerful in a generation or two with the Uchiha, Uzumaki, Hozuki, and Jugo clans. Especially if Hozuki can get his hands on all Seven Ninja Swords. Don't even get me started on Orochimaru.