In the slow realms (5) and others I think that the depots should stay non-unloading longer,I'm not sure when to let them unload automatic 20,000-25,000 points maybe.The reason is you need level 14 armor lvl 14 melee for paladins that is a lot or iron to dig or steal.Plus level 8 castles
that is a giant pile of rocks to collect. I'm sure you will be over 15,000 points at level 12 armor and melee with a lvl 7 fort. Just an idea.