I agree with you on clone wars, but don't forget about the Xmen Legends games. They were the templates for the Marvel Ultimate Alliance games and were awesome games in their own right.
Yeah, Clone wars and Legends were great. I was really looking forward to this one but when the developers went quiet about it for a long while, I had my doubts. Game had lots of potential, just wasted
Jeez I can't wait for a good X-Men game to show its face. Button mashers are fun once in a while, but with the deep lore that you can draw from a famous comic book, I am sure that something better can be done.
Look at how well Rocksteady made the Batman games. I am sure that something can be picked up from that.
Also, in the broader perspective, it is not just X-Men. Superhero games in general are failing badly. Spider-Man had one or two good games, Hulk has none, Iron Man has none, Green Lantern wasn't as good as expected...surely someone can pick up these titles and create some masterpieces.