With very little out in terms of standardized pricing on items and location to setup trades without standing in town or going on the Unofficial Discord. I think a thread type or complete separation with similar live feed to the community forums allowing pinned threads owned by the stall owners to update and list their own market stall pricing along side individual player listing for competitive pricing would be nice.
The economy will continue to grow in game as intended but more than just the stall owners will have a say in what the pricing should be. As the existing stall owners obtaining profit on top of profit, they can continue to outbid the rest of the community on stalls without being contested. There will continue to be benefit to bidding high for stall location as it would still be outside the game but the stall owners would need to be able to take more benefit via constant updating of item availability and competitive pricing.
Personally, the stalls tend to contain mostly the same items which is silly when I’m looking for something specific and need a wider audience to announce to hunt down certain items in bulk.