Why on earth did you hate anything about Origins? To each their own, of course, but Rayman Origins is one of my most favorite games of all time. I can't imagine what you could hate about it.
I guess I shouldn't answer your question with another question though. As for Rayman Legends, I'd say that based upon what I know, it's very similar to Origins. I think that instead of the mosquito levels, there are touch-pad music levels. Aside from that, I think it's pretty much the same kind of game. You'll probably like half of it and hate the other half.
I had loved it until I got to the part where all the worlds got connected to the other worlds. For some reason, I just found those worlds much less fun. But I'm glad they got rid of the mosquito levels, I hated those.
Craaaazy. Those worlds didn't really seem all that different to me. They were just a bit harder. And the mosquito levels were a blast for me. I'm not a fan of the shmup genre either. Some of them are really hard, but they never felt unfair to me. Also, they're fun to play cooperatively.