I agree completely. Unfortunately, the loot rules that where adapted in D3 and now into D4 have severely hurt the opportunity from D2 loot system. Although it is still more than capable.
Everyone crying about loot being personal loot and no longer shared resulted in loot raining from the sky. There is an abundance of loot every where. Which in turn, floods a potential trade economy.
Now, the current d4 rare trading economy isn’t that bad in the official blizzard partnered chaos sanctuary discord. However, the currency “gold”, is an infinite, easily obtainable resource, with a lack of gold sink, that will eventually lose its value and the trade market will diminish into nothing the later the season goes on.
To many items, to much gold. No other currency to support the trade economy. It will be good for the first month, maybe 2. It’s a good thing they plan on 3 month seasons. Any longer wouldn’t sustain a trade economy in its current iteration.