Its the heavy SSI ions they use. Its just too game imbalancing to allow usage of them. In games like this everyone basically ignores system power on ships because lets face it, a wing of Y-Wings or an ISD are the only things with enough ion power to actually be feared. I just dont see a way to balance their stuff to work in game without hamstringing them to a point they are unusable. And lets face it, you take away the ion power and its just not SSI anymore, now its Vong with crap tech, lol.