I think they should:
- Not introduce a gimmick every new game (terastallizing was so bad), although I did like mega evolution and dynamax/gigantimax
- Increase the development time of each game so it's not broken on release like scarlet/violet
- Introduce voice acting. The games probably bring in up to $1b in revenue if not more, paying voice actors should not be an issue
- Let us use pokemon abilities for other tasks, not just battling
This is just what comes to mind for me.







