The Virtual Garage could be used to edit the weapons payload for armed vehicles.
Helicopters and planes have their weapons mounted on hard points, but currently the Buzzard is the only vehicle that mounts different weapons on the hard points (there are other vehicles that come in either armed or unarmed variants, but they often require more structural changes than hanging a new missile onto an empty storage pylon).
These hard points could be used to specialise vehicles for specific roles. For example a Kajman, armed with 500 30mm APDS and 16 Skalpel missiles and no 30mm HE or skyfire rockets for anti-armor missions, or a Wipeout with LBGs instead of Macer ATGMS