Title: Guild Storage Tabs with Inherent Permissions
Family Name:  Megumu

Region (NA/EU):  NA

Another possible solution

Support. I've seen a lot of good suggestions floating around including the previously posted as well.

Some other suggestions I saw floating around:
The ability to lock individual items/stacks of items

Guild master recovery of deleted items

Sell back price = to buy price of guild items (so we don't have to hoard left over node and siege materials)
Removal of Guild Only items as ingredients to player recipes and replacing it with double value of the green personal variant

Honestly the whole guild system in general needs a huge make over...

I'll edit this response if I see more ideas in  my travels.

I agree that the whole guild storage system needs a rework. The Apprentice role definately should not have access to the storage until their apprenticeship is over.

I suggest that the withdraw permissions of Mission Specialist, Member, and Apprentice members be restricted, with the additional restriction that Apprentices cannot even open the Guild Storage until their apprenticeship ends. With the addition of the new Point Request system, I suggest that a possible solution to the problem would be to allow members of those ranks to request mats from the storage instead of points, which then the Guild Master, Advisor, Staff, Secretary, or Officer could approve. This would allow the Guild Master to set a daily cap of how many mats could be requested / withdrawn, and the mats could even be "mailed" to the members when the Guild Bonus is sent. This way, someone cannot "clean you out", as there is a daily limit on withdrawl requests that would need to be approved before said member would be able to receive the mats.