I learned that change can be good if it is excuted good. Not that SM was/is bad, but there are some things you can't replace like travelling or keep Ash at one place.Thing is, I want him to leave as well and be replaced by someone new, but if he's going to leave, or take up a mentor role akin to brock if they really don't want him to leave, it needs to be on a higher note than what Alola has done.
Personally I hope that the higher ups in Galar don't consider the Alola league credible, therefore Ash can't use it as a "mantle" to stand on when he goes there.
This is assuming he wins of course.
I'll say one thing, there's the saying "you don't miss something until it's gone." Sun and Moon made me feel that way about the anime's format, boring as it may be to many, i'd take that over Sun and Moon's format any day.