Heh... I knew someone would ask about this eventually. I've got no current plans to port Game Launcher to OS X. I've got ambitions and ideas, of course, but I'd like to get HID into MAME OS X stable first. There's some cool stuff in Leopard that I think would be great for a front end, namely Core Animation.
I understand your your priorities...makes sense. As I had mentioned in my earlier post, the mGalaxy programmer was interested in porting his quality front end. Just need to get him a machine he can work with.
I know how valuable time is. Thanks for sharing yours. -Dean