I'm not sure how much of this has been said before but I feel I should mention it now. Below is a list of things that I think could help the games guild system and improve the Guild Halls.

Guilds:
-Some sort of mass messaging system to mail all of the Guild members without having to individually mail them.
-The ability to name the individual ranks of your guilds to fit whatever type of guild you have.
-Perhaps a sash or costume piece that has a pre selected Guild symbol on it for guild members to wear (no combat abilities).
-A guild bank or storage area for guild members to withdraw or store items, crowns or crystal energy. (There would be a cap system of some sort)

Guild Halls:
-An interface to use the aforementioned guild storage or bank.
-An elevator to access the clockworks
-A way to party with guild members in the guild hall prior to venturing down into the clockworks.
-More to come...

Anyone have any comments? Anything to add?