Well, it does seem that everyone is leaning towards Operation Flashpoint. So I'm posting this just to throw this idea out there.
--Make a Basic Land Navigation course that people have to pass. Being able to find your way around is key when playing without markers, and simply to not embareass yourself. And if the game permits, you should be able to shoot asmuths to move from one marker to the other. Maybe a basic course that tells you where you start, and an advanced course where you are dropped randomly and have to find your way around.
I cannot fathom that the Lord has blessed us with logic and rationality and have us forgo their use.