l still cant get it, why dont choose another body who is strong enough to handle his great power(assuming that this is true, we have seen 2 bodys already and they didnt look like any great thing, just cute young boys), if possible with some unique abilities and get sasuke eyes only. It makes far more sense to me, i wouldnt waste my time growing a smartass like sasuke just to get his sharingan if i can take his eyes out and put them in any other body of my choice, gaining another bloodline, not losing time, and more important not creating a badass sasuke strong enough to fuck him out (what will surely happen at some point).