By the time I saw the show, in the middle of previews, it wasn't as long as it started - but it wasn't the finished product either. (I recall that a couple of songs I saw in the second act were apparently replaced by the time it opened.)
Shuffle Along had a spectacular cast, made all the better for me because I hadn't seen any of them before. (It was my first trip to New York City in many years.) Audra McDonald was as good as advertised. Brandon Victor Dixon was terrific. Adrienne Warren was a revelation. Brooks Ashmanskas played all of the white characters. And that's not even counting performers like Joshua Henry, Brian Stokes Mitchell, and Billy Porter. I have run across actors who had star turns in future shows who had smaller roles in Shuffle Along.
The first act was wonderful, and the choreography was often spectacular. The tap number, "Pennsylvania Graveyard Shuffle," is one of the most inventive, sharply performed dances I've ever seen. Savion Glover did marvelous work as the show's choreographer.
The second act didn't really work, and was a letdown as the "and all that followed" part felt more disjointed. But it was still often an interesting failure.
I have no clue about what happened beyond the obvious - McDonald was unexpectedly pregnant, and Scott Rudin closed the show. I can't say it was a bad business decision, as I wonder if it would have recouped in the midst of Hamiltonmania, but the way it unfolded certainly left a bad taste. It is bittersweet that the show ended up disappearing without a trace, just as the musical it was about had done.