Online Market Board?

I would like make a suggestion that I think ALOT of people will agree with. What if, Square Enix was to implement an online Market Board system where we can connect to our retainers to sell, buy, and store items. It can connect to our characters inventory and can update when we log out of the game, and become unavailable while we are logged in, since, of course, we will be gaining and getting rid of items. I personally would very much like to see this added to the game. What do you all think? Let me know how you like it, how you don't like it, and how it could be improved. Keep this thread alive and strong so that one day this may be implemented!