I enjoy it. Menus are non-intuitive. I gotta say, menus are quite terrible. Sometimes I accidentilly sell items and there's no way to get 'em back. But I like how you can move your skill pts around (generally, I just put all my pts into the most powerful or useful skill). I never played any of the previous X-Men games, so this was pretty fun. I wish there were a way to change ALL characters from automatically assigning skill pts and items. You have to go in and change that for each character.
I like that you can tilt the nunchuck to rotate the camera. Occasionally, I'll accidentilly be tilt it, but the more I play, the more I get used to that and like it.
I kind of wish I could use buttons instead of Wiimote actions, but you can assign one power to the A button, so I didn't have to do too much swinging.
Overall, I enjoyed this game. It's fun for multi-player and you can skip the story if you so desire. When you finish it, you unlock hard mode. It's not perfect, but I like it.