ZC is too broken. Keeping it the trade currency wouldn't fix the trade problems. It would just fix the event problem. I think by now, Zone has to just take an L and remove ZC altogether. Maybe staff could make a very good quality hat (not tradable) to give to players with over 5k ZC as a way to repay them, but for Zone's economy to improve, ZC has to go. If there was a ZC only auction and was announced that it would be the last chance to use ZC, then that would be fine. ZC just needs to go, though.