Would it be harder or easier for an uzumaki to use sharingan than a uchiha? Using kakashi as an example wasnt it said that he used more chakra because he wasn't of the uchiha. Since uzumaki have hella naturally hella big chakra pools and strong bodies to make up for it would they use it at the...
Besides trying to avoid "negative" feedback from fans why do you think Jiraiya wasnt revived during the war. We see both the other two sannin have some impact but not him. IF he had been brought back what do you think would've happen differently? Who might have taken him down?