There no need for tier factory's there 2 unit unlocks per tab in the research tree BASIC and ADVANCED so basically you start off with sc2 units the you can unlock basic classic units then ADVANCED classic units, just like how tiers work, but the upgrades apply to all SC2 factory's.
excellent screenshot
but the AI donĀ“t build the old land units.
Yes they do if you playing against a easy AI they wont build them till they unlock them which is late in a game, This screen shot is of a AI base.
will it give tier 1,2 and 3 factorys?
There no need for tier factory's there 2 unit unlocks per tab in the research tree BASIC and ADVANCED so basically you start off with sc2 units the you can unlock basic classic units then ADVANCED classic units, just like how tiers work, but the upgrades apply to all SC2 factory's.
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