With content being released more and more, I think a Trading System would be a great addition to the server. But, don't make it like Era where scamming is possible, just make a simple trading system via More Actions on the Player Profile.
- Offer another player to trade
- When accepted, a window pops up showing both of the trading players
- Then you press a button, to access your inventory items
- Select whatever you want, and then sit there waiting for the other player to finish
- When both sides press the accept button, the items are simply added to each others accounts
Unlike Era, everything we buy buy is tradable, gralats as well.