Actually some one is already working on a HUGE mmo furry game, can't remember the link but I know its out there.
You mean Earth Eternal? Everyone I know loathes the game just for being about furries. They don't even give it a chance, they loathe it Just, and Purely, because it's about furries. But personally, I think it's a breath of fresh air from MMORPGs that force you to play as a human or only offers humans and humanoid characters.
But anyway, yeah. Furry games are practically dead, now. Hardly anything out there that appeals to furry lovers.
Edit: To any still reading this, not only have I noticed that less and less animals have been used as goodguys in videogames, but more and more animals have been used as BADGUYS in videogames. Take TWEWY, almost it's entire enemy list is based off of an animal according to my knowledge. (I haven't gotten far enough to know for sure. I know there's an enemy based off of the Northern Star, but I don't know any other non-animal Noises.)