If you look at campaign units that have not already been assigned to a commander it pretty much leaves only 1-2 choices left for each race. Protoss pretty much only have some air and special unit options left. Zerg only have roach variants and primal zerg (unless stukov thinks of some new zerg like the evolved roach). Terrans seem to have exhausted all options except dominon.
The zerg/terrans have all the infested plus the left 2 die strains and 3 casters (Infestor, Defiler, and the old Queen).
Given that it has a harpoon that draws it to an enemy unit, My guess is that its main function is to act more or less as a barrier to enemy forces, allowing the rest of the terran army to attack from their preferred distance.
As for Archon mode, it reminds me of the mod micro/macro in the arcade.
Given the reveal of new information on starcraft 2 I am pumped about a lot of things, especially Artanis' new look. What I desire is a model emulating that look. (or at least some model of Artanis seeing as there is none)
I don't know what the cause of this is, but whenever I use a persistent effect to start an attack, the attack refuses to fire. If I use it without the persistent, it still works. This does not happen with almost purely copied (Firebat clone) or blizzard attacks, which means I have no idea what I am doing wrong.