I find it all fine, that this items are ovner only as standard, but allow us to changes permissions.
With the gem/mining cart, you can do it with lockdown the cart after you place it and then you are allowed to set permission.
It's sad, Co-owner is nerfed so much because someone got burned in the past. Let the one who fear a coowner will screew them keep the secure way with owner only on this ressource giving lockdowns.
Also I wish my co-owners to be able to release items locked down of an other co-owner or friend, unless set to owner only. We need more control.
Many of us only use co-owner for our own accounts and it is very annoying not to be able to allow all our accounts full co-owner power.
Maybe we need a master account setting, master accounts can share Sov to UO Store, so why not give all accounts on master account house owner power. Maybe make an options on house sign, where house owner can allow full power to all accounts on master account.
I also miss an options to allow full power to Guild Emissories in my guild houses, so they can havest resources, release lockdown pieces of resources, lockdown and secure stuff as Guild secures.