Currently the game wants to go harder into PVP so I have an idea to add supply drops.
How would this work?
Players would get a message that in X amount of time there will be a drop at X coordinates.
Eager players could regroup at a given location.
The rewards?
Wanting to encourage players the rewards would have to be really worth it. You could add some precious items, ready-made weapons, armory III++ or even add some unique items like temporary access to a new merchant or even a radio that once after use will give information if any enemies are within 500m.
Thanks to such a form of events there would surely be even more PvP.