Mage, Iriez, the view that not giving out source code of ports of GPL:ed programs is "OK" is one of the reasons the xbox scene won't get for example Pete's HW DirectX plugin.
If the xbox scene wants to see more emulators, it has to start respecting the original authors. The proper way to do that is by giving out full source to xbox ports of GPL programs. Are you listening XPort? Who knows, maybe Pete would agree to give out sources to the DirectX plugin if you respected him. Obviously you don't.
(in this post i'm disregarding XDK legality issues but of course they're a problem too)