I often wonder if critics tend to dislike shows more than the public does because they see so many that it's harder to keep them entertained.
I loved If/Then when I saw it in DC, near the end of its run, but it does make the audience work hard to keep track of which timeline is which. (I assume the glasses will help, if Idina remembers to take them off and put them on in the correct scenes). I left the show in tears because of something in one of the timelines that strongly affected me, and the song "The Moment Explodes" is one of the most searing that I have ever heard in the theater.
It may well be that If/Then will primarily appeal to females, although my husband thought it was phenomenal. Besides, even if a show is oriented primarily towards women, it can still be very successful -- look around the theater at any performance of "The Phantom of the Opera," and whom do you see occupying most of the seats?
Audrey, the Phantom Phanatic, who nonetheless would rather be Jean Valjean, who knew how to make lemonade out of lemons.