[@LegionPothIX]

I'd imagine your race to be much like the flood, spore infection first then you take the ships of the ones you've infected. I'd say you'd snowball pretty heavily if left unchecked. There are a lot of other traits that your faction exhibits that would make it somewhat more difficult to melt such a snowball, such as ease of infection and being resistant to most if not all human weapons (Aside from fire, though I'd imagine there'd be something one about that too) So, anything short of molecular bond deconstruction or atomization would be an exercise in futility.