That's pathetic.
If John and Paul, or Mick and Keith, or Ray Davies, or Bob Dylan, had had another 15 or 16 writers hovering around them 'improving' (a.k.a. ironing out any personality the song might once have had) 'Eleanor Rigby', 'Ruby Tuesday', 'Days' or 'Like A Rolling Stone' the 60s would have been as good as now.....i.e. it would have been lousy!
No wonder nothing ever gets done.
An editor of the New Yorker (can't remember which one) once told a cartoonist not to improve a drawing because 'if you get any better, you'd be mediocre.'
What's the other one? Oh yes, 'a camel is a horse designed by committee.'