I will post a more in depth reply later, but I have to make it clear now that some ideas I see here are moving far and away from what I liked about the outdated Starcraft lore, which is my primary inspiration. I envisioned a simple clone which did something with that premise as opposed being a completely different thing.
That's not a bad thing, but I would prefer to... IDK, keep our options open? There's no rule that says we are limited to one universe. We could have a multiverse with different premises for those who prefer it. Right now I am limiting myself to a straight up clone, since game mechanics are not protected by copyright.
If I ever got a chance to make this as an indie game (and learn to code at the same time), I'd probably be limited to an open source 2D RTS engine like OpenRA or OpenBW.