What would you guys think of adding a 30 second wait before GV supplies take effect and fix your tank or resupply ammo? It would be like the same 30 seconds you wait at an airbase or CV for a plane to refuel/rearm.
My suggestion is a 30 second wait while the GV is standing still.
I think a 30 second wait is reasonable to essentially get a new tank wherever you are and it would help cut down some unrealistic abuses of supplies.