I guess a current day confilct similar to what Gibson is describing would be fun, but how would that really any different, equipment wise, than what we had? Also if you are going to do something in that kind of open terrain you've got to give us bigger maps!
Personally I think a mid 80's game offers up a ton of playability, and also a level playing field. The M1 (not M1A1), and M60's with a 105mm cannon, against T-80B's will make you sweat. Not too mention mostly M113's....
Just think about it BF