Wasn't blink stalker micro pretty central to its playstyle as protoss, the race it was best at? Why would you say that is minor and marginal?
Is that supposed to be an intention in design? I'd figure an AI could easily outplay a human if that weren't the case, given its inherent advantages (e.g. better accuracy, the ability to instantaneously prioritize which units to blink in/out).
For example, [this](https://youtu.be/pETcAm82vXU?t=322) game is one example where an AI could perform even better using such tactics.
EDIT: another commenter mentioned it would make the game too unfair, so it was an intention in design.
100 zerglings vs. 20 siege tanks. Without insane micro the zerglings barely kill 2 siege tanks. With insane micro the 100 zerglings mop up the whole army with ease.
It's fascinating & fun to watch, but if your goal is to make an AI that can out-think a human it's super not useful, either.