Ok here's a game for you guys to play. Pick 3 to 5 fail MMOs, be it something that was cancelled after it was released, or it didn't see the light of day of a release date.
Here are a few examples released fails are:
1. Earth & Beyond
2. Tabula Rasa
3. Auto Assault
Now if you would take those 3 games and mashed them together, you would have a great one I think. But it's IMO only. lol You have the space combat of Earth and Beyond, and the Ground Combat of Tabula Rasa. Toss in the vehicals of Auto Assault for a fast pass ground fight and I think you have a winner.
So name a few cancelled or failed MMOs, Mash them up together, and tell us why you think it would make a great game.