Please allow us to sell items (any item, guns, ammo, portable structures, consumables, etc etc) we've obtained back to the store for a small percentage back of what they buy for along with us being able to favorite items. So, if you favorite one of the guns and its respective ammo you use a lot, then it'll appear at the top of its respective category list or in a new category way at the top called "favorites" - either or. If possible, a search bar for both the shop and the inventory would also be amazing!
I have guns that I obtained at the start of the game that I don't really use anymore and want to remove from my inventory as they're kinda just clutter. If I want them again down the line, I'd be happy to just rebuy them. Loadouts do help but I think we can do a bit more!
Mission items that you traditionally can't just buy back later can be sold for no money and could just be added to the shop as a free item to put back into your inventory. No harm done if you want to remove a mission item from your inventory that way.