In fairness I like the idea of revolving stages. I saw Arctic Monkeys use it at Finsbury Park in 2014 where they had the stage spin around to reveal them during the start of the opening song. Clearly it's not yet taken off outside of things like this.
Even so, you can like the idea of a revolving stage but think these acts really don't get all that much stage time and you're only really getting bite-size performances.