Roger has his moments, but a lot of his vocals are very harsh. Sometimes it works. Brian should have sung Radio Ga Ga, and Roger would have sounded great on We Will Rock You - as would Rod Stewart. Certainly the whole Queen issue is very heated on the Queen mailing list I'm on, but yeah, performing as Queen should not be done too often. Special occasions, with a carefully chosen vocalist - or preferably Brian. If John was still active, it might not be that much of a problem, but he's decided he's had enough, so it always sticks out like a sore thumb . . .
The difference between genius and insanity is merely the difference between success and failure.