This may or may not be errata; it was proposed to me outside of forum channels, but it does have me thinking:
Field Guns. At present, they cover ballistic, direct-fire weapons only. But, considering the only requirement is the tonnage for the gun and ammo, and the requisite number of people to fire said monstrosity (equal to the gun's weight), why can it not cover energy weapons and missile weapons as well? The essential rules would work like those for handheld weapons: Energy guns need to add the tonnage of their requisite single-type sinks, plus perhaps energy capacitors to reflect their battlefield batteries, to the total weight, while missiles just use the same weapon tonnage + ammo tonnage rules mechanic as their ballistic versions? Would also include the likes of rocket launchers and Mech mortars, of course.
Anyway, tossing it in as a thought grenade.
- Herb