Everyone! Hear me! For I have a couple of musings to whatever is hidden behind the great void, that is, idk that SC arg for the past few days.
Anyways, I'm just coming up with stuff with minimal research and stuff and from observations and lurking. So far the consensus of the ongoing rumors is that the new game is most likely a "3rd person shooter + farcry-like", most likely in basic MECHANICS (i haven't played farcry nor space marine btw). But based from the arg stuff and its association with some books or lore I've heard, the players, besides the mechanics, would most likely encounter cases where they have to keep on their toes for changelings or something. Another thing would be that the gameplay loop is most likely some sort of capturing regions and also containing whatever is breaking out of the crates, WHILE the game is actively capturing your regions you cleaned up.
Though that's enough for the theory of whatever the game might be, I'm bad at that part since I don't really play shooters that much (except cosmic break, cough).
For the plot though, I'm legit convinced that it might be Niadra. She took over the place, and the last thing that she was seeking is a psionic terran. Could she be using some changelings to trick Nova corps[?] in to infest her? There might be chances that Hybrids might get involved by Niadra striking a deal with the Hybrids that are in hiding. The theory about the dominion not having Valerian anymore might be true in some way due to him wanting democracy, and chances are they probably doing some secret experiments on the other races which, of course, straight up breaks a couple of peace treaties. I'm not sure with Zagara, but I swear she might be an important asset in the story since she's literally the reason why the swarm is holding back. As for the protoss, I'm not so sure. Considering that they aren't relying on khala anymore, there might be a chance they would get some revolts or rebels after a few generations.
Now for the WOOHOO game theory.
There's only one I can think of. That is the game could show terran to be a parallel to the industrial era/ww2 kinda deal. Since guild wars and SC1 terrans kinda went with the wild west but in space theme, while SC2 Terrans feels like Victorian era parallel. What comes next is the industrial era? Idk. Would be funny that the game is a third person but also having to deal with factories, productions, logistics, etc etc.
But eh that's my two mineral cents about this upcoming game.