Empty bags should be able to go inside other bags.
I should be able to rearrange bags in the inventory without dropping them on the ground.
I should also be able to sell bags to a vendor to get rid of them if I'm upgrading.
-I think the whole point of empty bags not being able to go inside other bags is so that you don't end up having infinite storage... and it would get really confusing if you end up stacking bags like nesting dolls.
-Agree completely with being able to rearrange bags by just switching them with each other, would definitely make rearranging your inventory a lot more convenient.