Asking for furret to be the main star on the next Pokémon game is like asking for scorpion, noob saibot, or sub zero to win the mortal kombat tournament. They are the most popular characters, but they aren’t going to be the main characters.
I don't seriously think Nintendo will make a pokemon game staring furret. I just like furrets and would buy the game.
Making games about popular characters isn't exactly a bad business decision.