Cats is a show that tried to do "everything" for the audience including to feel and to have a good time.
A show that tries to do everything shuts the audience out of having to do even the basics. It then becomes a floor show or a televison variety special.
As trite and at times nonsensical as the lyric of Memory is, at least it guided the audience into feeling something. The same with the pirate number. These allowed us to become involved.
Cats was also a triumph of PR. It had major news stories for months leading up to the premiere. Seat availability was limited and it routinely sold out for years, all based on the idea that it was the show to see. If they gave Tonys for flackery, Cats would have won hands down.
Never mind that the reviews were not all that good and that the NY Drama Critics Circle gave its Best Musical award that season to Little Shop of Horrors.
I have always wondered what Cats would have been like in a smaller house without that big set (maybe a few platforms and some black velours), with a suggestion of costumes and that great lighting. It might have been a better musical although not as big a cash cow.
"If my life weren't funny, it would just be true. And that would be unacceptable."
--Carrie Fisher