Not sure to get what you mean Will... Do you mean without the effect (as the picture on the left) or without the inland effect (on the right)?
Domhantyr ndw.jpg & Domhantyr ndi.jpg

I know, Pixie! Actually, I think the coasts of my old Nightfall (Oriental continents of this world) where more smooth... There are some few places where the coastline is almost straight, but not much indeed. That would imply to rework this a lot. Maybe later .

Here are a few tests about polar ices/frozen lands & mountains/forests
Domhantyr tests.jpg

Thanks for the useful comments everyone!