Starlight Express, musical by Andrew Lloyd Webber with lyrics by Richard Stilgoe
A romance performed on skates.
Nothing wrong with the casting, they were very good.
So, what was/were the problems?
They stemmed from that good old saw, 'if it ain't broke, don't fix it'. Meddling around with the 'choreography', shortening the performance and attempting it on a far smaller stage.
They went overboard on lighting effects and louder sound, but this did not compensate for the size or lack of size of the stage. I note it's comping to Liverpool, but once again it's one of the smaller theatres. Makes me glad I saw the full size version.