They disable rockets and torps for PT boats and rockets for other vehicles so they're slightly more than just eye candy.
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maybe ords bunkers should include all ordinance, including AP and HE rounds for GVs.
GV supplies are down when all the barracks are down (Troops and Supplies).
If GV ords are tied to the ammo bunkers, GV "supps" could still be tied to the barracks, but only be good for repairing GV's. Rearming GV's would require ords to be carried separately by an m3, and a second option to click to "load ords" in addition "load supplies."
Also vehicles don't run out of fuel. I never have more than 25% and I've driven for four plus hours on that on a couple of occasions.
That's something they ought to change.... Armor needed fuel and supply convoys, we ought to have fuel trucks... Third option to"load fuel."