I don't think too many of the twitter posts sound like they are coming from Theater Snobs. And even if they were, there aren't enough of them to be able to "doom" this or any other show.
How horrible for a musical to be totally disliked for it's music (as this seems to be the most consistent criticism).
That being said, there is still no way to know whether or not this will succeed. As we know, a show being of high quality has little to do with financial success. It could suck and still bring in audiences.
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.