Remove the instant heal gain on ACU vet and replace it with increased regen, preferably that scales with the vet level,
ei
lvl 1 +6 regen (what it is currently for all levels)
lvl 2 +7 regen
lvl 3 +8 regen
lvl 4 +9 regen
lvl 10 +10 regen
or something to that effect. stop stupid situations where a 4 vet com gains 1k hp and then survives when it should have just died, as it had 500hp left surrounded by 10 t2 units.