The trick IMHO to any new idea, for it to be something Funcom would consider, is to make use of the stuff that already exists in the game as much as possible.
There is no doubt people are crying out for guild houses, better apartments as such, here is my suggestion to how this could be done.
Missions are filled with room designs that would be perfect for guild houses and apartments, put together right, so all we would need is a way to manually create a mission, putting the desired rooms together.
Now all rooms has specific sizes, that was probably done so it would be easy for the mission generator to generate the missions... So they are practically puzzle pieces put together.
It shouldnt take that long for a qualified programmer to come up with a tool that could drag and drop this puzzle pieces onto a drawing area and a check button to check if all doors have been covered.
This dont even have to be an official program, it could just the small language that is currently used in AO that would be made public and supported in-game.
Then you would have a key, that could be duplicated to the members of the guild and a self-designed guild house or apartment.
