Why not ONLY be able to trade gear, not currency. In TTK, they spoke about simplifying the weapon strength and in clips I've seen of gameplay, they replace large numbers with just "light" and a small number like 30 or something. That would simplify trading: you can only trade things with the same light so like if you wanted a scout rifle but only had a hand cannon, trade with someone who had a scout and wanted a cannon. And to prevent trading for good stat/perk roles on legendaries, make it reroll all that when it gets traded