I thought that it would be nice to have a LARGE storage locker for your guild to share in your Guild Hall. This would allow for fellow guild members to share money and crafting materials without needing to be on-line to do so. We just got our hall yesterday, and I assumed that something like that would have been there.
I would also suggest that you could integrate the ability to build a party from your Guild Hall and then travel to any city on the map without losing the party you formed. This would make it easier for guild members to meet (instead of having to call out a district and then find each other in the city before heading out).
Just my $0.02
S.T. Mo/E20
M.M. Me/Mo16
S

been there beaten that horse to death already.
by the way