I've been in the beta for a while and it's been really fun. Not sure what sort of innovation people tend to nitpick about, when games like Borderlands 2, which is freaking fun to play, but innovation wise, isn't really that much going forward either.
Hawken has all the elements of an FPS along with customization of your character. The levels are pretty and matchmaking seems to work fairly well.
It'll be based on a free to play model so really you can't lose out. If you don't like it you're not out $60 bucks like some other game *cough*diablo3*cough*