maybe it is easier, but i think an immediate visual feedback of the items you drop into a stream of water is better. just because u can see what is happening at the very moment. closed pipes for transport are an abstraction of this idea. it’s not bad and i don’t wanna decline your idea. but i think seeing items in a stream of water frlowing from one desty not another would be magical in its gameplay appeal. i can think of an older versions of the settlers where exactly this was happening. the items were fully visible. and the transport routes comprehensible. it was not working by list for the player. and exactly this was new, fresh and very(!) charming.