Now the thing with towed guns is that:
1. Lower profile equals more stealth.
2. Although you would have to pick up and turn the thing around, I do believe it should compensate for having more ammo and bigger barrages.
3. Cheaper than SPGs which are usually (For a common SPG, like the Gvozdika and Akatsia) 55-60 points and very fragile, usually towed by trucks or tracked tractors that are unarmed and can be used to carry infantry, if you see that to be fit.
4. No need to worry about the insane turret turn rate of the likes of the ZSU-23-4! The ZU-23 is handcranked, so the thing will probably be more of a last line of defence or just sometime to plop down as a way to deter helicopter assualts and planes.
5 (Optional). Emplacement system allows AA weaponry or towed weaponry in general to 'dig in' and become immobile and have time to get out of digging in and digging in. This will make a graphic of a little hole in the ground or sandbags, whatever around the artillery piece. However, this graphic will be noticeable even without troops or recon on it, like in forests, some trees would be removed and there would be the graphic. The only thing is that once the towed guns leave, a semi long timer goes and if the position is not modified in time, it will disappear.
5.5 (Optional). For towed weaponry to dig in like described, engineering vehicles have to be brought up. There can be engineering teams of infantry that are slower at doing their job, but are stealthier and can be transported in fast trucks or atleast semi faster troop transports like BTRs and LAVs.
6. Some towed weaponry, like the ZPU-2, should be able to be brought along without a towing vehicle, so that infantry in remote parts can have extra fire power. However, most of these weapons will be lighter weapons.
