Well I came here to discuss metal :). Century Child is definitely a metal album. Tuomas stated his main influence was Metallica, back then. Bunch of guys in black, with long hair, songs about the devil, distortion 16ths with driving rhythm.. seems pretty metal to me, but who know smaybe it is fairycore, that is a great neologism.
Yeah Imaginaraeum or however you spell it was alright, and Endless Forms Most Beautiful is much worse than anything they've made. It seems so uninspired. I'm going to a NW concert in April, maybe I'll bring a little note attached to a pebble, that says "The new album is shit and you know it!! Go back to Tarja writing using Floor vocals!! - Love clockwise", and clonk someone in the head with it.