if ASF micro being too useful/good is an issue, its very easy to make it harder to do - just increase the turn angle on the turret - this means that you need to me more behind your enemy in order to get 'free' damage on them, so its harder to micro well change it to +- 90, so you have to be really behind them, and try it, micro should be much less relevant in fights.
also increasing the difference between their turn speed (during fights) and max speed (going in a straight line) will make it easier to retreat from a fight
as it puts more distance between the 2 hordes, this should help prevent stacking
also, i believe that the problem with asf isn't just the stacking, its that you cant do much about it;
stacking also happens in navy, but that's not a problem as you can kill it with air (especially cybran
) or artillery or something, while it actually stacks quite well as you get the reclaim after a won fight, while the air player might not
for this reason i think that making them weaker to AA will help as well
(i know some people say that AA is already great, but static t2 flak needs a buff anyway, and i personally haven't noticed it denting asf too often)
(all this is in my article but just bringing it up anyway)