1. What's wrong with accessing other companions' inventory? The only thing that changes is that you don't have to waste time dividing items between
characters and also to constantly transfer items from character to character because your main character no longer has a capacity.
This is a typical quality of life change that literally doesn't spoil the game.
Outside combat, sure.
But in combat the choice who carries certain items should matter. And we have throw you can use to transfer items during combat. It would even give Acrobatics or Sleight of Hand a use if you would need a check to catch items thrown to you.
