It would be nice more than some barrels and crates among few more things to manipulate in the world, or at least make it easy to incorporate new stuff with the toolset (like an override folder in Dragon Age or the modules system in Skyrim).
Another thing is the non-combat, non-craft and non-quest objects that only are there to be garbage. It is not as good as it looks; people hate to carry garbage (for example, because they don’t if know that thing will be useful in the future). I think all of the items needs to be useful for something (at least like the broom and bucket that we can equip as weapon and helmet). But this is only a comment because I hope Larian already have better ideas.