I disagree. I can see why Othello was trimmed and reconceived as a symphony. As a practical matter if Goldenthal ever hopes to have an orchestra play this music, there was no chance anyone would play the 90 minute three act ballet. This has been done a million times in the examples already cited and others like Khatchaturian's Spartacus music and others. The full length ballet is often done (last year at the Joffrey in Chicago) and in New York at the Met Opera house this May in four performances. But I hope now that it's a concert piece that it will get played by orchestras and even as a manageable one act ballet, as the three act ballet can only be done by huge opera/ballet companies.
As for Goldenthal's "artsy" music, as most of the releases date from the late 70s and early 80s, I find them fascinating in how they relate to his film music. In Jabberwocky for example you have all the trills in the horns which became one of his signature gestures in almost every film score from batman forever to final fantasy. I haven't done any analysis but they sound like strong pieces, especially jabberwocky. You can't fake good counterpoint skill. He's got chops!
And regarding the Glass Naqoyqatsi concerto, At 40 minutes it's already about 15 minutes longer than most concertos and about 40 minutes more music than orchestras want to program by a living composer.
