This might be outside the scope of what you're interested in, but I recently found out that you can set up shipping routes on Fulgora (desperately hoping this isn't a bug, let us ply the oceans of Fulgora).

.......any chance of a Lava Tanker/Cargo Ship coming at some point, something something Tungsten something? This is probably a bit far-fetched but I thought I'd ask, if for nothing else than because it's funny.

Yes, we left it in because it doesn't hurt anything. I think an add-on mod could change the collision masks so waterways can't go on lava or oil if it really bothers someone.

No one currently working on this mod has the means to create new graphics for cargo ships so unless you can find an artist, we won’t be adding any new ship types.