If you think that there is anything wrong with the current MMO scene, then.....yes, it needs to die.
The problem for innovation in MMOs, is that there is already a game, which have sucked a huge summ of the potential MMO players to it. If it died, like total gone, we would proberly see other companies try and take its place with something new.
But im not sure, that WoWs replacement would do any better than WoW itself. And im not quite sure, if MMOs like ESO and FFXIV are not keeping up the same scene.