Ben - I agree that clearly, GLORY DAYS - like any show that's not pre-sold - is dependent for financial success on the reviews, and by reviews, I mean the NY Times critic.
Because some people's negative feelings on the show and the writers' talents have been strong and powerful, I have argued with them, but my feelings about this production itself and its potential for Broadway success are not very strong at all - I do feel very strongly about the future of its composer, though. Even if the reviews turn out negative, I firmly believe that he's better off having taken this opportunity to be on Broadway than had he said "no, thank you" to the producers, and that he will flourish. Unless he gets totally demoralized and opts only to perform from now on, of course - but I think his talent is on display, and I can't imagine there not being a cast recording, where that talent will IMHO be even more abundantly clear.