Hi.
Most likely I am not the first to suggest this, but why not to add some kind of tokens that could be used to purchase any existing costume pieces, except maybe few very rare, like those that are sold with collector editions. Same goes to weapon skins. The tokens can be sold along with collector editions or independantly, amount of tokens required to purchase costume piece or weapon skin might be scaled with quality of corresponding item(for example, 1 token for white quality item, 2 for green, 3 for rare, 4 for epic etc). I mean, wtf, this content is already in game anyways, and it's not like it's lot of work to code algorithms for that, weapon skins sale was god knows when and new players coming to p2p look at others and think "ou wtf why can't i have that too". It's just visuals, anyways, we aren't asking for assault shells and pray all gods in hope that those things will never make their way to p2p.
Thank you.