Honestly I just want a single party-wide inventory.

Not just the screen we get when pressing tab and seeing the 4 active people.
A really party wide inventory.
Opening the inventory screen and being able to see everything held or equipped by the entire party, active or not, with who's holding unequipped items not being a distinction.

Anything players can do with no actual progression of game-time, they should also be able to do without needing to take up any real-time.

Whenever you want, you can put a bunch of loot on one companion, teleport to camp, swap them out, teleport back with the new companion, and pick up loot with them.
Anytime you want you can just move stuff between your active companions, using no actions or anything.
The game already lets you use consumables directly out of another characters inventory, even during combat.
The game even lets you move throwables between characters during combat (not taking any actions or anything), then throw it as the character you wanted.

There's simply no point in characters having separate inventories.
Just give me one big inventory that is the carry weight totaled from the what the entire party would have.
From which I can change the equipped gear of everyone.

And the camp chest, or lord the camp chest.
I can't even expand it's window horizontally. Really? I can only make it taller, not wider?
At least let us expand that window in both directions, if nothing else.
And really if we're in camp, we should be able to access the camp chest's contents from the same main inventory screen we use everywhere else, not have to walk each character up to the chest to compare what they're wearing to what's in it.