I was going to avoid this with utmost disdain because the trailer was reminiscent of 300 (a movie for which my loathing is a generosity) and because every recent rendition of Greek anything in cinema has made me froth at the mouth, but you said the magic words: John Keats.
If you promise it's worthwhile, fuck, I'll see it.
It's still patriarchal as obedient to the myth, of course. As it goes, it's a "male power drama". But there isn't exploitative nudity, and the female characters seem aptly framed in the myth. It also isn't juvenile as all living fuck like 300, despite the fact that they're advertising like mad that it has the same producers.
The magic word is Tarsem. I don't want you to waste your money on what might suck or anything, so if you want to get a feel for Tarsem, get "The Fall" (2006). He is visually amazing. That movie (and you must watch it in Blu-ray) is a visual orgasm. He filmed the entire thing on location across the world, finding some of the most visually incredible places and completely illuminating them. Ebert went nuts over The Fall and said there wasn't another movie like it (although his Immortals review says that has now changed).
I didn't like 300 either, of course. It was a jingoistic muscle-fuck. Theseus is at least humble, sensitive, and believable. And Mickey Rourke as Hyperion,
damn. DAMN. If he took over Greece I would head to Africa and keep going as far south as possible and never look back.
Some examples of Tarsem from The Fall (nothing spoiled beyond what the trailer depicts):
