Ronster said:

I have not been and I think I am going to give it a miss... Could anyone who has seen it imagine it being superior with John Williams music?

Or is it just that bad and even music won't save it?

The image is just too dark and the overall feeling is IMO even more gloomy than in the Dark Knight trilogy which doesn't fit for Superman at all. Williams' music wouldn't fit into it at all. MoS just isn't fun. Well, I laughed to myself a couple of times during never-ending fights because I couldn't care less even if the whole Earth would be destroyed.