Despite the fact there are hundreds of more important things AO needs, POS, or Player Owned Shops would be great!
However, these are simply, your toon, standing in one spot, and can either set up a little stall, after a 10-15 second delay or simply double click to trade. Both ideas involve a little bit of text above the toon with " Selling Stims 10/500k " or something like that.
Could mean toons could hangoutside Subway to sell to new players, at cheap prices, or around Bore Grid to sell some high demand weapons.
Whatever the case, would increase trade due to not having to travel all the way to someone's city for an item.
They're a great idea, and always work well.
YOU CAN AFK AND MAKE MONEYZ!