I've played around a bit with this mod but I found it rather useless on standard maps. All the water is in lakes normally making it far more usefull to go around a lake with trains than using ships. I know I can increase the amount of water but it still feels unsatisfactory.

I'm looking for a map with lots and lots of islands. And by that I mean things that look more island like and less like blobs. As a start I played with using the spot-noise for elevation with some noise thrown in:

https://imgur.com/R7C4nd3

The islands now look like circles and are all the same size. So still some way to go. But I think you get the general idea.

Would you be interested in adding something like this as additional map preset to cargo-ships?

Update: Got decent island to generate now. Resources need to be balanced still.
https://forums.factorio.com/viewtopic.php?f=8&t=87692

well, there is the islands world mod that does a very similar thing. that being said i am not necessarily disinclined on adding a map preset like this to this mod, if your willing to share your work.

since i am dont really have the time right now to activly work on this mod i'd suggest you make a pull request to the git repository, and i will try to find the time to merge, test and upload a new version.