Maybe fixing the sand bags on the barracks (behind) like in ROTR?
Also, could make the pilots swim and climb cliffs so he doesn't instant die upon parachute?

EDIT: I don't feel like using another topic so, did you nerf Armour Burton by any chance? I recall using him in Dr Thrax's challenge and apparently he did the exact same amount of damage to a toxin tractor in both weapons. I recall in 1.1 the HE round 1 hitting scorpions.