nothing. they're managing it fine and listening to the fans

I'd change the annual handheld releases to console releases :) hehehe

Adapt the Pokemon Adventures manga into an anime
More post-game content (Bring back the Battle Frontier)
Follow Lockstin/Gnoggin's theory on YouTube about a series reboot

I would sell it. And get an Airbus A380 outfitted like a private palace. And fly around the world.

It could try more spin-off, and better managed anime.

Make a Pokemon MMO

Make the starter a normal type that you can pick which type it evolves into

Kick out Ash  

Pokemon GO wouldn't be a hot mess

Would reboot the series and throw away every Pokemon that came after Gen 2. Pokemons wouldn't be added by hundreds like it is today, but each generation they would increase at most 50 at a time. I don't know if they can make
even more ridiculous Pokemon.

Hmm I would make Pokemon Jojo & Dio.

I would sell the IP