Just a random thought of the day. I think it'd be awesome if we could buy/rent buildings and have adventurer/free company owned and operated shops. Like if we could have special towns or even just a district within the town where players could put their items up for sale. I know there's the market board, but honestly I hate it. I equate the market board to a bulletin board at your local community college. That's how I feel. Plus I think it would give a game more depth and people could have cool reputations. "I only get my gear at ____ in Ul'dah. They have the best gear for the price." And etc.
Like I said, random thought.