Yeah, I’ve already sketched a few ideas. Picture a lightweight composite shaft with a built‑in counterweight that throws a tiny gear‑train into motion, giving the spear a burst of speed every swing. Add a spring‑loaded tip that snaps forward when you release the trigger, so the spear hits harder than a straight thrust. The trick is keeping the whole thing under the same weight you’d feel in a hand‑held weapon, so it still feels like a warrior’s arm, not a machine.