The problem with supressive fire on hex shooting is that a burst is not a constant shooting of bullets, there are no travelling bullets or any other projectiles in FOnline. If you miss, hit or hit someone else or hit multible targets is calculated the moment you shoot with all bullets at one time, without any projectile-entity flying around. So if you target a spot with a burst all your bullets will hit their spots in an instant, preventing supressive fire.
There goes supressive fire on doors, windows or other entrances with burst weapons

But anyway im exited to see where this is goin, there might be a fix to the thing i pointed out.
(I say this how i understand the FOnline engine from my amateur viewpoint, if I'm wrong please correct me)