Or make better versions of the weapons so everyone has to work for them, and not in zc so everyone starts anew. Raise the hp to 100 allows more options with tiers, take all guns down one and replace the high tiers with thr new currency items (untradable) and the highest tier with special items (spar/pk prize rooms). Make every style of gun in different tiers, same with melees meaning more freezeless melees. No tradable shop guns or special/zc/new currency guns, new currency untradable also. With this, everyone has to do work for thr too guns, current players get a head start at most, any tradable guns are limited edition collection items and will not be tier 1 guns (tier 1- 200k pk/20k spar win/maybe highest of new currency stuff; tier 2- auction/mid prize room/expensive guns; tier 3- railgun, rippers, alien set, old vip; tier 4 and lower-etc), use this system for both melees and guns and thatll take care of that issue.
As for hats, put more of all of them into the game, mainly thru events, no more one of a kinds. Still keep the rare ones rarer but not to where like 2 people make the price (which is usually someone greedy), therefore people have a better chance of getting a hat and at a fair price.
Auction items: no one of a kinds, and auction off more of the ones we have.
As for trade admins, theyll need to document all items of value and keep up with the low and highest selling prices and maintain it.
As for zc, add a ton of new goodies to buy, and more uses for them (like consumables, maybe pay for uploads with them, raffles, etc)