newintown: i don't understand why you feel compelled to frame your comment in terms of a "betrayal" (and i appreciate that you're attempting to shorthand a more subtle concept, so i'll respect the use of quotes) of rabid fans of the book ... isn't the issue here really the "betrayal" of the nature, i'll even say the spirit, of the underlying text itself? i think the focus is off.
plus, let's be real here -- it's not as if either "betrayal" (rabid fans or text itself) would be a material concern for a commercial broadway production!!! the only "betrayal" that would stop deep pockets from trying to make a buck on the great white way however they thought best would be maupin's (assuming he felt it).
most of all, it's not like this type of material hasn't been successfully adapted as musical before. in many ways, doctorow's original "ragtime" novel was as sprawling as "tales", and they made a fine musical of it while retaining (admirably, imho) the book's sense of scope.
i was fortunate enough to be in SF twice on business during the run -- early on in previews and again in july, when it had extended. the tightening had been considerable; not sufficient, but substantial and directionally encouraging.
imho, there are two themes that i think could be leveraged to achieve the "sculpting" the work needs ...
the easy one is anna madrigal; she's the constant in most of the story lines.
the harder one is the city itself. "tales" is about a time and a place unique in american cultural history. it doesn't exist anywhere anymore, not even in SF itself. a much trickier proposition, but the material could be re-crafted in a way that it means to tell *that* story.
ok, i'm rambling now ... the thing is (things are) that rabid fans are neither a material consideration nor a particularly objective way to frame the concern AND while i agree this needs more work (it's been given a lot) i think there's enough there there to warrant the effort.
"You, sir, are a moron." (PlayItAgain)