What if in the guild hall you could put any weapons, armor, shields, helms and costumes In storage items in the guildhall for example: put the armor and helms in the wardrobes, the weapons in the weapon crates and the shields in the footlockers or chest of draws. Each storage item would have their own list of things in them.
all Mats and acessories would stay in the current form of storage storage.
this would be fairly easy to implement because all that would have to happen is that the current items that would be turned into storage would just have to have an interact button attached to it, then the same sort of system of placing as the current system of storage.
this change would only be really asthetic.
Err, guild storage is already split into member+, veteran+, and officer+ sections, so any problems you had with people taking from that , you would still have.