I don’t know much about Guided By Voices, and am okay with saying Robert Pollard and 3 guys named Joe could call themselves GBV and I would by okay with that. Diehard GBV fans may disagree with me, but I have no opinion.
As far as Crowded House is concerned, I do have an opinion. It is almost impossible for me to conceive of a Crowded House without Paul Hester. I think he was integral to everything I love about the band.
I can begrudgingly accept Crowded House with Neil Finn and Nick Seymour and/or Mark Hart.
Neil Finn and 3 guys named Joe? Not Crowded House for me. Even if one of those 3 guys is named Tim Finn.