I’d like to see a more fleshed out inventory system. What I have in mind might be way more in depth than what the game currently needs, but I think it’d be neat.
I think “stockpiles” should be able to be upgraded to store rooms. Or better yet, instead of placing a flag to start the game, place a store room that takes up a 25x25 area. It holds 500 items until you assign a quartermaster. Then it upgrades to 1000. Stockpiles could then be added to the back of the building if necessary. But if a stockpile is attached, only the quartermaster can retrieve items from it. Hearthlings would go to the quartermaster for supplies, he/she would gather them up, place them in a cart or wheelbarrow (please add carts/wheelbarrows) then the hearthling would take everything they just got from the quartermaster to the building location.
This might help reduce the number of stockpiles required to run a small town as well as give a more realistic feel to building. It would cause the Hearthlings to go to the stockpile once for materials instead of running back and forth several times as well as potentially increase the speed at which building are constructed.