Remove the stacking heal auras?

[Exodus]

Removing the factories healing aura might speed up the game a little, so removing it's stacking property will be nice. Guards rooted healing doesn't stack and factories shouldn't stack either.

Actually, they do stack. The heal aura of the Guard was only changed that way, that it wont heal another Guard. Other tanks will heal twice as fast when there are two rooted Guards near them, though.