Inventory Sorting + Containers
As I slowly progress into the ranks with all my jobs I've come to remember the time I consume switching out gear when I would like to change another set of job. I usually try to keep crafting together, magic together then Dex and Str jobs together. Searching through my retainers to pick each piece individually however does bring back some FFXI memories.
Perhaps we could encourage a set of containers, 10 slot box/bag that would simply portion offpart of your inventory. It wouldn't add slots, the slots would become part of your inventory but it would make it easier to bunch items together.
The ability to label them would make it most perfect.