I know it would be awesome to have an actual Hearthling Merchant arrive at our settlement along with their mule / merrchant cart and pick up the sold goods or unload those being bought from their “merchant storage”.
We would further need our Hearthlings to acomodate those being unloaded back into proper storage.
We could even have a special “in transit” zone for inbound / outbound goods and a Merchant profession who could have a special backpack to further handle and store these. ( Bring items from / to storage to / from “in transit” zone )
We would even need to establish a “safe” route to a map border to do so in order to secure trade through defense and questing, but that’s another story …