Your Hopes for Gen 10

They should spend their time on making full versions. Have more encounters be lower odds encounters because it would allow hunting for pokemon to be a choice of how hard do you want to gamble your time. Encounters in Scarlet and Violet type versions are easier to avoid and there shouldn't be that much power creep in a game type where random encounters are the time sink.

Then when you have the base two versions as large as can be made then in this example you make a third version with expansions made for the latter(the more complete/latter version). And add a hotfix later to add the expansion(s) to the original two versions.

This is how I would do it. I'm not lying that I would wait to have this rollout. I think it is King.