Flamethrowers
Ethicol fueled merriment!

The thread on heavy weapons the other day sparked my imagination, and said imagination devised a most holy of weapons. The flamethrower! Fueled by consumable ethicol, the flamethrower does no damage on it's own, however upon hitting a target, said target is ignited! Upon a miss, there's a chance that the room is ignited instead, with a scaling progression of blaze intensity!

pleeeeease?

I don't know who Jinx is, but I love them.

I'm not sure if any heavy weapons are still being worked on at all. When the flamethrower was announced that was a loooong time ago at a town hall. And there would probably be balance issues since there's not really armouring against fire in the game. I could be wrong though.