Currently, the guild gui lacks the ability of control for guild owners, no way for the owner to control the specific permission of a user, e.g. bank access, warring permissions, or other actions. I believe updating the guild gui to allow for control over guild permissions, without using rank promotions should be done.
Personally, I would really like to see more guild updates, as even if it is not the largest player percentage, it is the most economically powerful percentage of players, and the player base most likely to stay active.
