Hi!
So I was thinking, carry capacity seems to be an issue for some players. To the point where they would rather travel alone but take companions anyway to get the inventory capacity bonus.
How about an untargetable (for enemies) hovering wagon that follows you around? That acts like a mobile container? Or maybe a cart you drag around (enable by walking up to it and pressing activate) and when you're about to get into combat, look at it and press activate again.
(I subjectively personally don't have a problem with the weight limit in FO3 and NV.)