The Act reportedly was offered to Shirley MacLaine first although who knows anymore?
Another rumor was that once signed she insisted on Scorsese with whom she had just finished New York, New York. No Scorsese, no Liza. There were also rumors of an affair, but there always were those kind of rumors.
Remember that Gower was brought in during the long and troubled tryout (Chi, SF, LA) to bring some show biz savvy to the leaden book and numbers that sort of just came and went. That was one of the reasons he spelled Barry Nelson for a bit during the run.
(There were rumors of an affair with Gower too, but I wasn't there.)
Liza worked very hard and won her Tony fairly. Of course she partied very hard too, often until dawn, and missed a lot of shows.
Finally she and the Shuberts (who produced) worked out a deal that she would play 7 a week foregoing the Wed matinee and the number of performances would be tacked on to the end of her contract which extended the run by a few weeks.
Still the show only broke even.
"If my life weren't funny, it would just be true. And that would be unacceptable."
--Carrie Fisher