I am a big fan of your fractal world generator. I have been wasting time for years using your iteration of the code, and before that, Olsson's.

The Fantasy World Generator is inspired, but using a rectangular projection with a hex grid produces scaling issues in polar latitudes.

Have you considered using the Traveller style world map method of an Icosahedral map with the hex grid imposed to eliminate polar scaling issues in the Fantasy Map Generator? I know the Icosahedral projection is available for the fractal world generator, so I imagine it's simply a matter of including the option.

Other notions I have had:
An option to toggle the hex grid
An option to toggle terrain icons
An option to in/exclude rivers
A gradient value for civilization icons, where the value is the number of cities to include

Also, on a side note, do you have any tips for producing maps with the generator that have more distinct mountain ranges, as opposed to mountain 'blobs'?