I want to be able to create 'folders' in my inventory like mini backpacks, purses, scroll holders etc, where I can add all of a certain type of item, and then add the 'folder' to my hotbar so when I click it, it expands like spells do when you have to select a spell level.
As otehr mentioned you can do that using containers (put any container like backpack or pure unto your hotbar, and put items you want to have access to in there). Couple problems:
1) It's a lot of work - you can't specify a container as "potions", "scrolls" etc. and have to manually put everything there (unless there is already a type of an item stashed there). Then try ot remember which container has what on each companion. I have a system for that, but that doesn't change the fact that I am having to find ways to create a basic functionality in an underdeveloped UI.
2) it makes alreay tedious hotbary system even more tedious to navigate - especailly when trying to managed containers on hotbars on the whole party - it is not enough to send scroll to Gale, I have to either send it to him, the find the scroll and put it in the bag (bad idea), or better, switch to Gale open container I am looting, the open container on my hotbar, and move item from one container to another. Also sometimes things just don't work. Trying to move things directly to hotbar sometimes works, sometime doesn't.
3) Containers can't be opened during trading - your rogue is overflowing with traps or arrows? Sorry, you have to go to the inventory, split item stacks, move it to "main inventory" and then you can sell it. That or sell entire container.
4) speaking of containers - things get very confusing when you get additional containers, I discarted a bag full of scrolls and kept an empty bag on one occasion.
Something that I have been asking for is automated system - assign "scroll", "arrows", "potions" etc tags on the hotbar, and clicking on it will show all such items in that character inventory. I would also love the same thing for spells. Let me assign a button 1st, 2nd 3rd etc level spells, rather then having to constantly manually manage the hotbar after every levelup or switch in spell repeortoire after long rest.
