Of course , he has been changing peoples mind , talking about his dreams & how he will never change blah blah blah , only for him to say : oh no , I decided i don't want to be hokage , dattebayo.
screw him , Hokage or kill him .
Assuming he lives, then yes Im pretty sure he'd accept the hokage title. He would just be known as the greatest hokage to ever exist.
Or, if there turns out to be some sort of massive shinobi alliance for all eternity then I can see him being the leader of said alliance.
All & all I won't be upset, It's kishi's story after all.
Lol, of course he will live!
OP: yes. It would be a reversal of the entire series.