In my opinion, they have ruined it. We went to see it at the Palladium last Friday & I could have cried. We had tickets to go to the matinee on Saturday but gave them away to some random girls outside.
They've changed a few things. But changing the Rum Tum Tugger is the biggest sin of all.
First video, is how it always has been. Perfection. Second is an audio of how it sounds now with a photo of what his costume is like now.