Currently, the war supply chest seems to always end up in one of two spots (where the plane enters the map). Either around 35, 20 (close to the outrigger outpost) or 78, 88 (in the sea outside of Freehold).
Neither of these locations really encourage any PvP. It’s usually merely a chore to fly out and get the chest. Could the planes perhaps drop the chests a bit more centered, where we could expect both Horde and Alliance to do WQs?