> Like, how incredibly tightly units clumped together should've been picked out as an obvious flaw immediately
Pretty much everyone who used air-units in SC1 abused the "tight" formations of Muta-stacks (or other SC:BW air units). In most fights: tight formations are incredibly superior to loose formations. (Obviously Corsairs / Valkyries changed that, but typical hit-and-run tactics are better when stacked)
Automatically having tight stacks in SC2 meant the skill-curve of tight formations was brought down: so that beginners can benefit from the strategy with less practice. Advanced players can still use their superior APM to loosen the formations (if they go up against anti-death ball units, like Siege Tanks or Banelings).
Pretty much everyone who used air-units in SC1 abused the "tight" formations of Muta-stacks (or other SC:BW air units). In most fights: tight formations are incredibly superior to loose formations. (Obviously Corsairs / Valkyries changed that, but typical hit-and-run tactics are better when stacked)
Automatically having tight stacks in SC2 meant the skill-curve of tight formations was brought down: so that beginners can benefit from the strategy with less practice. Advanced players can still use their superior APM to loosen the formations (if they go up against anti-death ball units, like Siege Tanks or Banelings).