well, nightwish was a one-trick pony all the time - but since kicking their vocalist out, all that remained was a substandard metal group like there are thousands. tarja didnt make their shallow songs great, but she made the band stand out. its like placing a didjeridoo in a metal band would make that band stand out, regardless of the quality of their songs.
how couild the heads of the band be so swollen that theys didnt realize kicking tarja out is their inevitable end?