I think a proper producer should make a band sound like themselves....but better.

Spector had a good idea....the "Wall of Sound".  7 parts good composers, 1 part malleable, attractive young female singers, 2 parts quality production.  But to me it's all pretty much much of a muchness.  High quality stuff, like Henry Ford's Model T.  Wah bloody hoo, who wouldn't love a proto-X-Factor? 

Dee Dee, Marky and Johnny didn't play a single note on "End of the Century".  Rock and Roll, you gun toting,murderous wiggo!