I know people say the only star of SPAMALOT is SPAMALOT, and in many ways it is, but you can't say that the statement is 100% true. I'm sorry, but if you were trying to sell SPAMALOT or THE PRODUCERS without any big name stars, it would be A LOT easier to get tickets for it. Part of the reason people are flying into NYC to see the show is because there are three HUGE stars in it. Yes, there is a big Python fanbase out there, but you can't expect them and only them to fund the show. There are musical theatre fans who come to see the show, who know nothing of Monty Python, because they want to see these celebrities in the show. Without those three actors, I can guarantee you people who don't know Python are more likely to wait for the show to tour and come to their city. So SPAMALOT is the big star, but without the three big actors the show would not be as big of a draw.
People WILL be upset to miss Azaria for a whole six months. They may not need a HUGE star to replace him, but they'll still need some sort of a name. Chris Sieber or Hank's understudy won't cut it. I love Sieber A LOT...but im also realistic. If the producers are smart, they'll try to find a comparable name replacement for Azaria.
"I love talking about nothing. It is the only thing I know anything about." - Oscar Wilde