Magpul A-Flex cap, available in various colours. Since there’s already a ton of Magpul accessories, this should be easy to add in terms of licensing.
Cobra Boom-Mic Headset, which will allow you finally have a headset/microphone with the headwear that’s currently incompatible with the current in-game selection of headsets, such as the Boonie Hat.
HellCat Plate Carrier. They have an optional internal pistol-holster in the front as well, so equipping this could remove the thigh-holster and move the pistol to the chest.
Tactical Tailor MAV, both one-piece & two-piece. Looks distinct from the other vests presently in the game, and since there’s already a Tac-Tailor patch in the game, you guys must have some sort of agreement with them in place that would make adding this fairly easy in terms of licensing.
5.11 MOAB & PUSH bags. They look great, they’re unique compared to all the other backpacks, and they should be easy to add since you have so many other licensed 5.11 items in the game already.
Trade Patches. I’d love for my Medic to have patches that identify him as such. Same with any of type of character, both for role-play in the Campaign, and for the specific classes/roles in Ghost War. A Red Cross patch for the Medic, for instance. Crossed swords or rifles for the Pointman, a Lightning bolt for the Signaller, etc.