Like in terms of combat, youre only allowed to use it with manhacks and rollermines, so the possibility of using it completely relies on a factor outside your control. Is it too powerful? What if to combat this, the alt-fire required a loud charge-up, similar to the tau cannon? It would alert enemies that an engineer was about to punt a sawblade through their midsection at mach 5.

its just be to prevent people from spam punting things towards enemies but i like the suggestion of it having to charge up to fire