[Venom_Fish]

Well, I originally was going to suggest add-ons in my post with the whole pawn-shop idea. But any gun-altering add-ons would be a disaster without a doubt. Hence why I withdrew that, but if you're speaking of add-ons not impacting gun statistics, I'm all for that.
Ex. An add-on that makes the gun lighter, able to use another primary weapon with it etc etc.

Then again, all this would take alot of time and is it really "necessary" for such trivial improvements?

As for the Pawn-Shop twist you added; I like alot. Still enables players to sell weapon as well as limits the amount of weapons produced, and involves the pawn-shop to initiate the rotation. Since Era has 100+ items, licenses shouldn't be a problem even if it is limited. Players can strategize as t what items/weapons are in-demand and purchase licenses for them, this would actually make businesses more applicable to Era as well as add a "realistic feel" to them.