I agree they should go with a different name. Tolkki's writing style is very distinctive and is what gives Stratovarius it's recognizable sound even when Timo K. isn't singing. I remember listening to Revolution Renaissance for the first time and thinking, "Oh yeah, I could so hear Kotipelto singing these songs".
I don't know how the other guys write except for Timo K. His writing style is very simple and spare where Tolkki tries to be spiritual and uplifting. If Timo K. has the most writing influence the new album is going to be more straight-ahead classic metal, more like the last Strato album, and I really don't want to hear more of that type of material released under the Stratovarius brand name.