Thought about adding a shotgun too, other than the machine pistol and the sniper rifle, but (if I understood correctly what warboy said), the AI isn't "conscious" of the range stuff, so shotguns wouldn't be used effectively against the player.
Also I just don't think I'm going to touch the weapons anymore. I already have to separate the new weapons from the MiB to make them optional, so I won't add more non-vanilla weapons to this mod (if I do, it'll be that railgun).