I kinda see Roscoe's side of this, but using a different example ...
For A Little Night Music, Trevor Nunn didn't come out and say, "I can fix everything that's wrong with this piece," and then start attacking the original design, the size of the orchestra, the earlier version of The Glamorous Life, the staging of the dinner scene, and say "these were all terrible, and I can make them better."
If he had, Sondheim would have taken issue with his arrogance, right?
Not necessarily, and this is where I see that Roscoe's point about having a bit of a double standard is accurate, as far as Sondheim is concerned.
With the film adaptation of Sweeney Todd, not only did they change many things, which Sondheim supported and approved, "because it's a different medium and it must be adapted for that medium," BUT ... Tim Burton went so far as to say in interviews (watch the DVD if you doubt me) that he never cared for choral singing, so he cut all of it. Crowds of people shouldn't sing together, because it's not natural. He began to name other things that he wanted to "fix" in the story ... and Sondheim didn't object strongly and publicly to the director's arrogance then, did he? Nope. He was congenial instead and played "nice."
That's' a double standard.
"Jaws is the Citizen Kane of movies."
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