Spider Man keeps falling

Okay, so no one told Bono you had to say "The Scottish Play." What gives?

God knows no one wants to be on the record insulting Julie Taymor and U2, major and successful artists, and this does sound like piling on, but what, exactly, is the point?

First you have Spider Man, a big time commercial Marvel property that has had his chance to shine and tell his story everywhere you can imagine (movies, comic books, cartoons, TV shows). Then you have Julie Taymor, who has already had her Tony for commercial work, and has a full career of films and spectacles. Then you have U2, which has already created incredibly successful and ubiquitous music for decades.

What here is so new and powerful and artistically potent that it's worth risking the safety of the actors? Or sending them to the hospital? Or risking the audience's safety?