If I remember correctly, Lineage 2 had a system where players who wish to sell some items could "set up shop" - they would literally sit in an open, highly populated area and enter a sort of shop-mode. A display popped over their heads indicating that they had items they wished to sell, and selecting said display entered an impromptu vendor screen. I loved this for two reasons. The first is that it adds a HUGE amount of player interaction to the game. I remember walking through dozens of people all trying to sell their wares, and each time I would request an item in the chat field, I'd have at least two or three people vying for my business. The second was that it actually kept the in-game prices of items relative to their rarity or usefulness. This, to me, is one of the most crucial functions of a trade system. Not pointing any fingers but some recent games have implemented auction houses and trading systems that threw the prices of items so far off a balanced point that it was almost useless as a game mechanic (although this is in itself moot... As the function wasn't to improve game mechanics but to allow players to earn real-life cash. Again, not pointing fingers).
So what do you think? I mean, this could even stem to allowing players to set up their own shops in designated areas and actually act as vendors in previous ES titles. Imagine, one day owning your very own thrift store... In ESO!
Discuss!