I have two different sets of friends -- two different couples -- who have nothing in common, though they all go to the theater. They all left at intermission. One group was pro-Groban, and his participation got them there, the others are long-time musical theater fans, indifferent to Josh, and like challenging stuff. This show "wore them out." And had been unable to see it off-b'way. These two sets of people -- 3 of the 4 are younger, a different demo than I'm in -- are anecdotal evidence of very little. I get that. But the show isn't for everyone, and love Groban or hate him, he did this piece a great service. I love the score, like the show, and thought Groban helped give it some event status, as nicely as he folded into the mix. They can surely find someone who can do that again. They need that person. Or persons.
"I'm a comedian, but in my spare time, things bother me." Garry Shandling