I'm just trying it out and so far I'm really impressed. I've not come across any other bit of software that does world generation as well as this. From my perspective - I'm worldbuilding for TTRPGs and written stuff - I'd really like to be able to export this to GIS so I can fine tune coasts, plot roads, that kind of thing. Is that something you'd consider implementing in the future?

I'm not sure how that'd work.

I looked at geojson on wikipedia:

https://en.wikipedia.org/wiki/GeoJSON

and it seems to be a data format for storing lines, polygons and points on a globe.

What exactly are you expecting from such feature?