I would like to suggest some additional items for guilds that do not have value outside cosmetics on the hall itself. You've already done this with the house simply allowing players to transfer these cosmetic items to the guild would seriously help.
The prices really are not the major problem, for myself anyway the real issue is the lack of options to cosmetically improve the over all guild. Rugs, Plants, Statues, Even a post board that would display a guild message which you could change.
Anything to help make the guild feel more customized to the group of people who are in it.
I don't have any real suggestions for additional useful items I would just like the option to cosmetically upgrade the guild itself.
Thanks for taking the time to read my suggestion