Drex is working on a hardcore server, and I've heard rumors all weapons will be available.
Personally, i like the effect limiting the a-a weapons has on the gameplay. There are more dog fights / furballs, and the Mirage, Mig-21, and F-5 at least have a chance to get work done. If you've ever watched the tracks of the Red Flag multiplayer fights, it's a spamraam fest, which is boring (to me). At least with r-27r's and Aim-7's you have to close within 10 miles, usually much closer.