The idea is that he'd come out in extremely one sided fights. The crew is on the backfoot. And then boom! This guy comes out to save the day.
That being said, I can see where you're coming from. While I'm not so sure about shrinking him, since his other function is to be a large troop transport, I can cut some of the weapons. Specifically the thigh turrets, making those spotlights or something, and then two of the four chest missile batteries.