Nearly every OPEN Bway show will participate. (They are not permitted to start while still in previews, but can join once they open - some do, others don't - I think it depends on how much is left in the campaign as a deciding factor, which is up to the show themselves.)
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.