All in all, Touhou's music needs more Western love!
In fact, we need more shmup remixes. RPG remixes from Final Fantasy and Chrono Trigger(by the way... where's my Xenoblade remixes, guys?) is all fine and dandy, but we need more variety if we want to evolve - and that means trying out untested songs.
Necrofantasia, of course, would be the best place to start!