I've noticed that some of the airplanes has missing LOD's at certain distances, the Tu-95 for example. Try flying towards it and you will see that it disappears at a certain distance and then reappear again.
The stall speed remains the same but the IAS-readout will decrease as the air get thinner. Again, IAS is dynamic pressure which is what you need for the wings to generate lift. Flying at or above the critical Mach could cause stall-like behaviors like Mach-tuck but it's not the same thing. As you get higher you will have a progressively smaller window between too fast (Mach-effects) and too slow (stall). Apparently the U2 had a window of 5kts when at its operating height...
Behaviour at high altitude?
IAS is the relative dynamic pressure, not the airspeed. The best measure of airspeed at height is your Mach meter which uses calculated TAS. The adverse effects are because of the high airspeed around the airplane body. Hope that helps.
Edit: Think of it like this: You need IAS to not stall, but it will decrease as you climb. On the other hand you shouldn't fly too fast because of sound barrier effects. Look up http://en.m.wikipedia.org/wiki/Coffin_corner_(aerodynamics)
There are already a machine gun equipped building in the game, I think it's called "Armed Building". You could probably remove a civilian building in the game (I believe it's possible via script) and spawn the armed building in its place.
Personally I never understood why so many wants an Afghanistan map. I flew around the "Southwest Asia" map in TOH:Hinds and the landscape is _very_ featureless (as in RL). (Almost) no high buildings to buzz, no bridges to fly under, no ocean for shipboard op, only flat desert and a few very small villages. Sure there are some nice mountain ranges but they have that in other places too. I'd love a Western European map (ie Fulda gap) but the high population density might be hard on the frame rate.
It should be added that this is a pretty risky maneuver because they could very easily lose control of the plane when doing this. There's another video somewhere on Youtube that you see that the plane spins around when trying a cobra (it is a very short section of a clip, I'm guessing the cameraman stopped filming when he saw his friend lost control of the airplane). Pilot accounts I've read also state that when flying the Draken you have 1% of your focus on tactics/weapon employment and situational awareness and the rest 99% on concentration on just trying to fly the airplane.
+1
They don't need to make new animations, the infantry could just move, stop, shoot, move again. Also they should do this individually, not the whole group together.