The Band Remains The Same?

As the roller attempts to return to the stage, thoughts turn to the business of bands.  Money vs Creativity.  A good brand name is hard to resist.  Scammy Hagar's latest book tour bites remind me of all the personnel changes we've tolerated.  Most have been lesser attempts at sustaining the original magic.  There's nothing wrong with seeking out your peers to create a new sound, but branding it as the original is kinda like New Coke.  Come up with a name at least! 

Music is ART, not an MLB franchise!  There oughtta be a law against this.
 
Genesis shrank into shrinky dinks.
Cry's of EPIC FAIL follow the Bad Queen Co. 
Paul Dodger's was earlier sought by the Doors to replace Mr. Mojo Risin'.

In his defense, Hagar eventually took the high road with "Chickenshit" & Snatch.
As did Page & Plant &/or Copydale &/or Firm &/or Creaky Vultures &/or you get the picture.
And one creative approach of note: Anderson, Bruford, Wakeman, Dewey, Cheatam, & Howe.

And before you set fire to my guitars, I'll mention the RARE EXCEPTIONS- RUSH, MAIDEN, DIO/SABBATH & even Dead Leppard.

Get your scorecard & pencil ready when you go over Scammy's "almost was" resume:
 http://rocknewsdesk.com/world-news/hagar-said-no-to-velvet-revolver-motley-crue-and-aerosmith/1634/#comment-9291

Congratulations to ZZ TOP - oldest band with no personnel changes.

I'm guessing YES had the most, Along with VIA Gra. (dare ya to find other post!)
Old albums of note have the family trees on the sleeve-Uriah Heep, King Crimson, & Maiden.

Any ideas who has the fastest revolving door in Rock?  Are they hiring?  I know all of Page's solos!