A few more updates today, I was looking at the vehicles and thought that the "Deploy Sandbags" option is never used so I've replaced it... On the Bluefor vehicles with weapons (Humvee/Jackal) there is now a Deploy Ammo crates option when checking the rear of the vehicle. I've set the ammo crates with a variety of ammunition to hopefully please most people.
Each crate is unique to the vehicle and can be loaded back into the vehicle using the action menu on the crate itself. Another plus of the vehicles being able to drop their ammo crate is that any of the helicopters can load this ammo crate as cargo and then can be dropped to support other troops.
Have a play and see how it works out, first implemention of this so no doubt some bugs ;-)
After the gameplay today, I also had a look at increasing the locations of where the weapons cache can be found, unfortunately they cannot be placed in some of the smallest buildings due to some restrictions, but I've tweaked a few of the locations so may still add a little more variety in the future.