Hexagons are still regular, and thus don't make up a natural/realistic landscape. Plus the voronoi approach makes it possible to have areas of different sizes. I might be experimenting with that, e.g. reducing the number of regions depending on region type, e.g. desert regions would be larger. But that requires re-calculation of the mesh and I'm not sure I want to go there (because everything else like moisture, etc. is based on that). Would need to experiment and see if it gives me something worth the while.
If your hexes are small enough, they can still give smooth natural-like results.
Probably demands a lot more juice, though.
