There's nothing wrong with 2D and turn-based combat. A multiplayer version of that, is the Pokemon game I've always wanted. I don't want to do no silly skillshots.
Would this be what you're looking for? Basically turns pokemon red into an mmo, even uses ROMs for the content.
Gold was my favourite, but Yellow will have a special place.
My lineup was actually Charizard, Blastoise, Venusaur, Mew, Raichu and Ho-Oh.
The newer one don't really have the same feeling, I don't blame the 3d part, it's mostly the addition of characters and pokemons.