Board Thread:Theories and Speculation/@comment-31338621-20190501030435/@comment-26636534-20190503081555

Given enough time I think Minato could have mastered Sage Mode. And therefore incorporated it effectively into his fighting style. Characters reach their primes at different ages for different reasons. But mainly if there is an opportunity to grow a character more than likely will take that opportunity.

Just wanna point out that Orochimaru at around 50 years old, was still inventing new jutsu and improving on others (edo tensei). So the potential to increase his power is still there for Minato. Minato has a few options in this regard. Like I said before Sage Mode mastery, which could branch off into more sage jutsus.

Elemental rasengan's with added abilities as I stated before. More variations of toad summoning, like Jiraiya had. The fact that Minato was said to be an expert of Uzumaki sealing techniques, leads me to believe he had more than 2 sealing techniques up his sleeve.

I don't see any reason why he wouldn't improve given the chance, sure being Hokage isn't easy and time consuming. Yet, Hokage Minato is stll the best deterrent to enemies of Konoha. That being said, if he can improve greatly on his abilities, it would only be better for Konoha which would be his motivation.