The vanilla Customized worldtype is exceptionally flexible, and allows for quite a lot of fairly impressive things to be done with it.

As an example, Quark's 'Realistic' worldtype is actually simply a wrapper for a preset made by soniop on reddit, and described here.

Having the ability to at least use the preset json text either in the world creation screen in-game or in profile definitions in the lost cities config would enable quite a lot of interesting world generation patterns.

That's good enough for me, honestly. Easy enough to use the gui in the vanilla menu to do designing if you have to.

At least the ability to use preset texts will be available next release. Not sure if I can integrate the gui into mine easily. Will have to try that out

Implemented next release