The story of Kate and the construction crew is told in Tracy and Hepburn by Garson Kanin along with a few other tales.
I second that the star of the show was Michael Bennett. This was a show that moved far more than it danced and that was all Michael's. Many of the 'chorus' were actual models and the others had to look like models. Michael also encouraged each dancer/model to assume a personality of her own.
The unit set was deceptive since it was three sets on a single revolve that went from one room in the salon to the other. However there was a second outer revolve that moved independently of the large inner one. Several times the revolves moved in different directions giving the illusion of speed.
The book construction was weak but Lerner got off a few zingers that I remember to this day ("There's no bitch like a man."). Some of Kate's songs worked well enough but almost everyone else's fell flat. The notable exception was Rene Auberjenois singing Fiasco with a terrifically clever lyric.
Kate didn't want anyone in the wings to be visible during the title song so the velours were pinned shut. A friend who was in the national tour however unpinned the blacks one night and watched and said it was riveting especially since you had an actress who couldn't sing hold an audience spellbound.
Coco closed in NY at a loss, but the investors got their money back and a slight profit from the road tour. Later a stock tour went out starring Ginger Rogers and the original costumes. It played one week stands in places like Westbury and Sacramento and everywhere in between.
There was a definite sapphic subtext between Coco and her protege. Coco had a fit when this pretty young thing 'gave it all up for the love of a man'. Why?
As for an Encores presentation, don't hold your breath. The show is a collector's item, but not very good. It also needs a huge costume budget. There was a red collection during Always Mademoiselle that was easily 30-40 pieces alone. It is visible in the Lost Treasures excerpt.
"If my life weren't funny, it would just be true. And that would be unacceptable."
--Carrie Fisher