Then I totally agree, but which buff should be apply exactly aside of the aura?
Redesign of the gun or one could keep the gun similar level and make the unit more durable.
Removal of either tech or CP restrictions
Aura now split to passive 5-10% DR and active providing extra bonuses
Aura scale with veterancy
Commander now a time ability providing extra LOS
Can now fire smoke rounds
Possibly a debuff to enemy units available.