Ok doing it with scripts is one thing, but doing it in the engine is completely different.
Whilst alot can be done with scripts, there is always an inefficency due to the overhead of the lauage interpreter which turns the script into method invokes in the engine.
Im not sure but when I read this i cant help but be hopeful that the Marksman DLC will include this as part over the overhaul of the weapon system.
The reason I think this is because the firing from vehicles, feedback item #2452 and 3rd by total up-votes, is going to be done so the dev's are obviously reading these forums - which is awesome, not many of the game dev companys even consider such a forum as this.
Im sure there will be lots of goodies waiting for us in Arma 3's future. Personally i cant wait to see whats coming. Arma has always been my favourite game. Who knows, maybe they might even bring back the Warefare CTI mode *hint*.
Anyways, its great to know that these issues are being addressed. Thanks Bohemia.