I am pretty tired of the "its pretty generic [power metal, death metal, Iced Earth]" excuse. If a genre ain't broke, then don't fix it. Some people out there like generic power metal/death metal and that is what they are going to listen to. When bands change their sound, they get called sell-outs. If Dying Fetus and Vital Remains still have fans, then why would they want to move out of the "generic death metal" realm.
NP: In the Arms of Devastation by Kataklysm