Reminds of my feelings toward Amorphis. A great band, with the heavy growls, who decided to ditch them all together, and go to clean singing. It took me 2 years to get over it, but finally I came to realize they were still a great band, but I feel they should have changed their names, because they are so different now that it is almost false advertising when you go into one of their later albums. With that said, while I miss their older metal days, I think their new album is the best this year maybe.
If Opeth was to do the same, would I still like them? Of course, they are to talented not to like. Would they do it and still go by Opeth? I do not think so. The band has said before that if they ever changed their music drastically they would not call it Opeth. Opeth is the sound you hear now. Anything different by the band, while still amazing probably, would not be Opeth. That is my biggest problem with Amorphis, but man is Am Universe good.