Great idea. Make them separate to promote diversity but they can all use universal weapon (with good enough rolls) to challenge class weapons. i think they should allow our weapons levels. Weapons are given at level 1. Give it PvE stats and PVP stats. Lvling in PvE gives you one point (per level up)used to increase range, stability, reload, or mag size. May require 2 or 3 points to boost rof or impact. That way it is truly your preference. For PVP the weapon has (based on rarity) 2-5 weapon levels. Those levels(once reached) open up perks. That way, PvE is hugely diverse and PVP is not affected. So they are SEPARATE. Max level for PvE weapons based on rarity: Common- lvl 10 Uncommon- lvl 20 Rare- lvl 30 Legendary- lvl 40 Exotics- lvl 50