I firmly believe that Ash should stick around for another season in hopes that he and whatever Pokemon he gets have better treatment. Give him a starter, give him Koraidon, no repeating types, especially if they don't add anything new, and give him more than 5 possible catches.
There is a reason after the BW rotation disaster, Ash never had more than 5 new Pokémon.
Giving him a Legendary Pokémon isnt that TOO much?
Honestly I can almost predict that Ash will catch some kind of Dragon type in Paldea.
Me, myself hope for the following things:
1) No hub. I know it is very likely that the academy will be the new hub. But I kinda miss traveling by foot.
2) Give Ash a decent subgoal. Research fellows isn't exactly something that changed something for Ash bar traveling to certain locations. Sun and Moon had the Pokémon school, while the Island Challenge was the main goal I think.
3) A decent cast. No offense to Gou and Koharu, but they aren't exactly likeable. Let Ash be a mentor/teacher figure and the other cast are his students or something like that. And don't make the cast TOO big or TOO small 3/4 people max.
4) The next step in being a Pokémon Master
I sincerely hope it ISNT battle related for once. Give the next step some emotional or personal depth for Ash.
5)For the artstyle that is a difficult one. We have gotten alot of different artstyles over the 2 decades and idk what could be next. Please no CGI tho. Then I quit.
Wouldn't it be weird to see a S/V trailer before we know the outcome of the PWC? I mean isnt this the first series we get a preview before we know the outcome of the league/tournament? Correct me if I am wrong.