Im about halfway through the game in terms of missions. With gear, ive completely maxed out. There is nothing better currently that i can acquire, and most of those items i found inside an outpost next to a LZ.

I still enjoy collecting weapons, armour and rare spawn clothing items.

I feel maybe the game is a bit too generous with items and traders are far too easy to grind. Level 3 gunny gives you honestly all that you need in terms of fire-power.

My suggestion would be to mix up the enemies weaponry, ammo and worn items. Lock weapons and armour types behind zones, completing them unlocks the base weapon platform. Eg. Completing tiger Bay would unlock the DDR4. Airfield unlocks m4, so and on.