I guess that's what I meant by not worrying about "defending" or "changing the land grab." Those issues are bigger than we can solve, and are driven by forces stronger than a fighter sweep can address. And like you said - a different death ethic (one side cares if they die, the other doesn't) makes it harder.
Instead, I'm more or less thinking "Fine, they have their base taking. WE like shooting up bad guys, but it'd be more fun for us if there were enough hunters to keep the rest of the zerglings from interfering with my fight."
Bottom line - Even if they take the base, we have fun.