CONTAINERS! I really want to manage my inventory.

Unique containers - For important items. Marked unique as well, so you don't accidentally sell them. Like that time I sold my Pixie Bell somewhere. I was not amused.
Just a named bag [for the races, like with underwear?] just to manage companions inventory with.


Ammo Belt - For storing arrows and throwables, obviously. Should work the same as the containers we have now.
Scroll Case - Same, but for scrolls
Potion Case - Same, but for potions and poisons.
Wares Crate - That automatically stores stuff that is 'added to wares'

Bags of Holding - that decreases or negates the weight in the bag. Make it expensive, it;'s fine, it's for us hoarders anyway.

And if that is too much hassle, just go:

Red backpack, blue backpack and so forth.
Give me the ability to 'mark as important' so I don't sell them.


Fear my wrath, for it is great indeed.