Two more features to improve inventory management, which are also very important to a happy and healthy feudal life:
Auto Stack Items of the Same Quality.
Right now ALTclicking simply stacks all items in one big pile without any regard to quality and regional resource. This is almost useless without preemptive manual sorting. What we really need is stacking the items of the same quality in stacks with regard to regional resources - those should be treated as separate type, so that non-regional resources stack with non-regional, and regional stack separately with regional of the same region.
Visual Representation of Quality on toggle
Right now we see only quantity, please add some visual representation of quality to it, so we don't have to hover above each and every of the gazillion stacks. It could be color, or a short "Q15" right after quantity, or both, or some other clever design which creates visual representation of item quality in a convenient unobtrusive way.