Currently the game is not very flexible as to where wares are sent to for storage. (the nearest storage house). This sacrifices a good bit of fun and planning when playing the game.
Let me give an example: Suppose you have a charcoal corner somewhere, where you cut trunks and make coal. You know that you are going to explore a mountain range somewhere else on the map. Would you not wish for an option to direct the coal to a storage house close to where your smelters will be built? It would probably avoid a traffic jam, if you could send the coal in the slow sequence it is produced, compared to what happens when a sudden demand of 5 smelters jumps in.
The best way I can imagine would be to determine the storage house from the production site's window. But that may be complicated. As a first step, a way to move certain wares out of one storage house into another, would already help a lot.