The playerammo pickup kits proove to be useful, though not in the intended way. I like them being placed at flag spawns giving me the chance to exchange my observer kit for a wrench in order to repair static emplacements. But most guns have to much ammo and blow up too often thus they barely get empty and barely need to be refilled.
Same goes with the truck. Usefull to rearm artillery with missing shell types, though you can't leave em close to the guns, as the splash damage of the truck, blowing up while being shot or unused, can destroy the gun. If I remember right.
Commander drops require co-operation between squadleader and commander. The squadleader needs to be schooled in requesting drops properly, then you can rearm a gun properly as well. Option number 2 is to push the box with a truck to its target. Though this can end up in odd situations when you push the box with a supply truck to the target.
Accordingly the commander drops are rather useless or unused when playing in public, but I guess it is more appreciated in organized campaigns.
I'd like to see a vehicle with repair abilities. Like the repair-tiger of the panzer elite in Company of Heroes Opposing Fronts. It doesn't need to be heavy. A Sdkfz. tractor with a crane would be enough.
Currently you can do already supply missions with trucks rearming german tanks with the rare AT shells. In those cases you can drive around having a wrench ready repairing the tanks on that occasion.
Problem is just that tankers barely understand your intentions and drive off. With the short repair distance of the wrench that is all in vein then. Accordingly I'd like to have a vehicle that autorepairs vehicles nearby when both are being occupied. The distance in which vehicles can be repaired should be big enough to prevent tankers from suffering due to splash damage when the repair vehicle is being shot. Otherwise tankers would avoid a repaior vehicle anyway.
Just a thought.