I agree. However, within the context of the StarCraft series, I believe it is well within the standards established by other conflicts that have been coded as 'just', aside from fighting against things whose lives are coded as without value, like the Zerg.
(The rest of this argument is getting pretty confusing to me, so I'm going to assume this is the thrust of your argument and focus on it. Don't hesitate to bring any of your other points back to my attention if you think they're important.)
Interesting. I always thought they were being moved into the Wastelands because that's where the Zerg were, and the Confederates wanted to see them in action.
I'm pretty certain you still don't understand my point here, so maybe if I approach this in a different way it'll make things clearer. What was the Overmind's motivation for invading the Terran worlds in the early stages of StarCraft?