Hello, I have several NPC suggestions. E.g. assigning different tasks (tree felling, raw material extraction, building construction, etc.).
I would be glad if you could interact with them like a butcher has meat inventory you can trade with him, farmer for vegetables, Armorer has armor etc.
Having the do tasks like gather and build is a bit sophisticated and would make me think that the game would mimic Civilization I,II,II,IV,etc. and they would say "at once my Lord!" before they ran off.
I agree adding stuff to their inventories would be cool. But I think that should be done when you can define how they act(attack etc). Having different poses would be good too. Also assigning them to roam specified area would rock.