I don't really remember how much time has passed but i would be happy if there would be old market system back.
I mean like supermarket, there's many small shops in it, it would be good if it would be back again.
Each player can make his own shop and they would show at left side with top shops, shops with lowest prices and so on.
I know there was a market like this in Toribash but i don't remember when it was.

I don't see any way it could be better that way. Sure, it was cool 'n all to have your own shops but it's a lot better to just be able to search the items that you want instead of having to browse through shops.