The dynamic campaign was so cool, one time I was taxiing, preparing to take off for some routine mission when a bunch of Patriot SAM missiles nearby start firing off into the horizon. The game was simulating an actual, unplanned, attack 30 miles away and nearby air defense was responding. It was none of my concern though, it wasn't part of my mission, at least not until I got into the air.
I really like the idea of a flight simulator that tries to enable realistic things to happen, like stalling or being able to loft missiles, etc. I don't care as much about having the airplanes handle like real airplanes. I have a keyboard, mouse, and cheap joystick, I'm not going to get a realistic flight experience out of these, period, and spending 80% of the development effort on getting the airplanes to feel like their real counterparts isn't important to me.