Ship Routes between two docks on Home Island

Im playing on one of the new large custom maps
My source of gold ore is at the opposite end off the island to where it would be best processed.
Rather than run a belt from one end off the island to the other it occurred to me that it would be far more efficient to build a dock near the gold ore source and another next to the gold ore processing plant.
We should be able to build docks, give them unique names and then set up routes between docks in a similar way to how contracts are setup in the dock UI

Yes, barges or ferries.

Yes, while im excited for trains as long as there is bigger maps, water transport seems more practical on any maps produced so far.

I've rewrote this to be tl;dr:
Coasters and coilers make sense to have in game: water ways have historically been used as they allow large amounts of bulk and container items to be transported slowly but cost effectively. In game I feel if they were to be expensive to build and fuel but allow lots to be transported it'd be the logical step - this slowly improving with time similar to how the Ship improves.
It also would allow you to maintain island beauty without using slag bridges.
That's my 50 pence, sorry for necro :-(

/casts "Raise Dead"
Ship pathfinding was added in update 4, so it should be much easier to add this as a game feature or as a mod.