Indeed, that would make sense, but unfortunately an option for auto-add/auto-remove weapons is missing entirely - unless weapons are included in one of the categories (I am including a screenshot of the menu). But even if they are, there is only an option for auto-remove spells (and quite frankly I don't think it works properly either, since spells disappear from the hotbar when changed anyway).
I would suggest adding a separate hotbar for weapons, just like the category were we can toggle opportunity attacks. This would make it more structured and we would have a clear distinction between weapons and spells/consumables, etc.
![[Linked Image from i.postimg.cc]](https://i.postimg.cc/zvpTZDL3/bg3-menu.png)