Well anyway.
Yes when Steve Howe left, they managed to churn out one decent album (90125) and that was it... Essentially from that point they weren't Yes anymore.
Queen with Paul Rodgers, need i say more?
Van Halen with Gary Cherone, not that Sammy Hagar was all the great either but at least Van Hagar had it's moments, Van Cherone is just Van Crap, plain and simple.
Lynyrd Skynyrd after Ronnie died, ok, they weren't bad, but from that point they simply should have just quit and went their seperate ways, Ronnie was the heart and soul of the band.
Jefferson Airplane when they somehow manifested themselves into the crapheap that we all know as Starship, who have inspired many people to dismiss the banRAB great musical legacy as crap simply because of one song, which may very well be the worst song ever made.
Chicago post Terry Kath.