Can't find a suggestion thread on this even though it has been discussed numerous times on threads. Seems obvious.
Reasoning:
All cosmetics should have account bound purchase options.
Mostly affects untradable Clothing and Vehicles
Yes, Vehicle Kits potentially can be used on cars available in game, thus tradable in the in-game marketplace (or sent via mail)...but not all Vehicle Kits can be used that way.
All ARMAs clothing cannot be traded in the in-game Marketplace, even those which used to be in-game (ex. Double Gun Holster Back)
All ARMAs exclusive vehicles cannot be traded in the in-game Marketplace (many customizable ones have in-game purchase options anyway).
There is an option to Account Bound upgrade Weapons...but not clothing or vehicles.
You can get Account Bound Weapon skins (packs and individually)...but not clothing or vehicles.
There are already a few big bundles that clearly make this possible...but there are so many bundles that don't have this option.
Pros:
More reason to buy character slots.
Justified prices for those individual items that are not 99G1C.
Easier than debundling everything.
Cons:
Only a con if you don't have multiple character slots and just don't understand how bad people want virtual, pixelated, legwarmers without spending a fortune.
Only a con if you hate people are wasting money buying virtual goods to support a game with tones of customization.