First, I apologize if anything of this has is already in the game. Is there a list of all working weapon and vehicle xml tags anywhere? I have a creeping suspiction not all of them are used in the vanilla packages..

Anyways, here we go:

1 - Allow weapons to aim directly at the terrain instead of at a random height above it. That would be really useful for weapons with splash damage like the LAW (or half the weapons in the Doom mod )

2 - The ability to control weapons spread exactly. I tried to make the plasma gun shoot perfectly straight no matter what the wielder is doing, but that simply can't be done with the tags I have seen so far.

3 - Ability to set the random pitch variation for each sounds or at least disable it. For some sounds, the default settings is just too much and makes listening to them a pain. Thundershot is hurt by it pretty bad.

+1. It annoys me quite a lot when I shoot the LAW near a few enemies in the open only to have it pass right next to them.

Have you tried spread_range in the specification part? It's 0.2 by default.

I haven't, because I had no idea it even existed. Is there a complete list of all keys usable in the xml files?

Edit: Just tried and setting it to 0 did the trick. Thank you. I wonder how many more gems like this does the game hide?