Very cool that you got to train with the ROK Marines. Yeah, most martial arts were originally designed to save your life and thus the training was intense and most likely pragmatic. If it didn't work, you either didn't make it back to teach others, or your side lost and the other more effective sides tactics and skill sets were the ones that got passed down to the next generation of soldiers/warriors. It's really only been since the gentrification of martial arts that you have started to see things that are so far removed from reality.
IMO, the really sad part is that the general public doesn't know the difference and so either buys the Snake Oil, or lumps all Martial Artists and Black Belts into the same illegitimate group.
That would be very cool to have a directory of gyms of forum members. If I were going to list one though I'd list my instructors as it's a relatively short drive down the interstate from mine and there is not a single person on this board that would not be totally blown away by his depth of knowledge and skill. I mean, I fully believe that I could teach anyone here valuable things as well; but why go learn from Luke when you've got Yoda right down the road? I would of course come down and train if any of you were going to be in the area though as it's always fun to put a face to the screen name.