I've started poking around at this. The good news is that the HUD edit is pretty simple, but I found out why changing the movement code is a headache: it's copy-pasted across every weapon. I guess the Deimos-1 dev didn't know about using inheritance. I'll try to keep you posted, but I started poking around way too late in the day to be doing a full refactor, and I don't wanna half-ass it.