Digimon games were generally garbage. Pokemon as a game will always be worth playing. They could probably make a lot of money off of an mmo version including each region.
I play pokemon from time to time. I find that there are WAY to many to collect. Its really overwhelming, and I don't have that kind of time to CATCH EM' ALL.
I think there could really be a great game if they updated all the pokemon to look more realistic/less cutesy like the ones you posted. There's potential for a real badass rpg but it'll never happen.