Tickets on sale is not always an indicator of how long a show WILL stay open.
Chicago aside, revivals don't usually have long staying power..a year to 18months is pretty normal for a successful revival.
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.