I just saw this last week and had a very nice time. I thought that much of the music was quite beautiful, and I thought the performances were great. The sets, the costumes, the lighting were magical...in so many ways.
Was there a plot? Yes. Was it fleshed out to any great depth? No. I agree with that.
In fact, the side stories that were going on at the same time weren't either. But I didn't care. I was just taken in by the colorful and sparkling nature of the show overall. The way it touched on several stories relating to the dreams that people have behind their pilgrimage to NY, in addition to the one main story. It was fine with me. I wasn't expecting Rent, or Next to Normal. And I felt it delivered. For what I needed at the moment.
Which just goes to show how subjective theater is. I have been attending NY theater since I was a kid and saw Fiddler on the Roof on Broadway as it was nearing the end of its original run in the early 70s I think it was. And I have been seeing shows ever since.
There will always be those who dislike a show, and take some sort of glee out of feeling "vindicated" or proven "right" when the critics don't like the show either. And that's fine. Just as when people see a show they loved and the critics agree.
For me, I couldn't care less what those who disliked this show think. I saw it in spite of it. Because I knew of all the times, on numerous occasions, I didn't follow the critics, and was thoroughly enamored with shows they didn't particularly like. So I look at clips from a show. I listen to the clips of music they share, and make my decision.
And again, it's not like this is the first musical largely panned by the critics that I personally liked. It won't be the last. I will continue to make up my own mind as to what I think I might like, and see it. Regardless.
In closing, the friend with whom I saw NYNY didn't like it. He really didn't care much for how the stories played out either. That they needed more depth. Etc. But he was willing to give some praise where it was due. And he certainly wasn't driven to feelings of hatred or anger over the show.
Just my opinion.