Louisville is awesome, and the row of docks that run along the river are an excellent touch for the rich folk that live there. However, they could be even better if a few were larger. For one, rich people sometimes own larger docks, but more importantly, if you provide a few different sized docks, crafter-players can play around with larger structures on them.
(I know of course you can build on water without a dock, but the dock base is very aesthetic hehe)