I like Muse - brilliant drumming, bass work and guitars - but I think Matt gets lost in the 'I am a polymath, I must add more keys and noise to this' - and it gets a bit like the last days of Queen - pompous for the sake of it.
They do have some killer tracks though - you can't deny their technical craft, they just get a bit OTT with it. I suppose it's the split between making what they want and what the fans want - a similar problem Dream Theater have had.