For all the emphasis on "history", there's another element that hasn't been touched on, and I'm not sure ALW would be pleased.
This revival is the first I’m aware of where the score has been diminished from its original role, and its capacity for relationship to plot within the show.
• As the actors are not portraying cats, but instead are real people who are members of competing "houses," the relationship between score and plot is significantly changed from the original.
• In “…Jellicle Ball” the characters only happen to be performing songs from “Cats”. This production is a Ball that is “Cats”-themed.
• In “…Jellicle Ball”, ALW’s score takes a more submissive role in service of the three elements the show won Tonys for: Direction, Choreography and Costume Design.
• As there is no longer a direct relationship between ALW’s score and the characters in “…Jellicle Ball”, the score could (reasonably) be replaced with music from a number of different musical works that have a cohesive structure; e.g., either of Madonna’s “Confessions…” albums, come to mind.
• In “…Jellicle Ball”, ALW’s score is no longer imperatively, or compulsorily tied to the production.
I believe that situation is a “first” among any previous examples of revivals.