Airdrops and Satellites:
Airdrops do not make sense in this game.
Instead of airdrops lets make Air Vehicles fly over the island randomly.
These air vehicles will also be able to be taken down using the Satellite Landmark, it scrambles their instruments and causes them to crash. Whoever gets to the crash sight can salvage it, but it takes time to get everything.
New equipment can be introduced this way, and it is more of an event then an airdrop that has a blood packet and some hide boots in it and is gone in 30 seconds.
Ships and Lighthouses
Introduce passing ships to the game, like the air vehicles above these come randomly and they can be crashed using the lighthouse landmark, players can use rafts/boats and other equipment to salvage the wreckage which takes time.
Water Tower and Flooding
Allow the water tower to be activated every now and then and cause a flood.
** Sierra Army Depot **
An Army depot guarded by Robots / Turrets This depot would be multiple stories/levels bunker style and the deeper you go the more dangerous it is but also the better tech you have a chance to find.
** The Glow **
A Radiation Danger zone Bunker/Vault that is multiple levels deep and the deeper you go the more radiation and dangerous traps/guards/mutants w/e are down inside, but also different and interesting loot/blueprints/equips etc.
** Remove Barrel hunting, Make the Workbench give Crafting Buff and make it so Blueprints can only be studied at a Workbench**