So it's been a few years and I've not exactly made a huge amount of progress (damn real life)... This is still all I have so far:



There's a really broad colour key of light brown-green for areas above 500m, dark brown-green for above 1000, black for over 2000m, and brown for plateaus and very light brown for basins.

The continents and oceans are named, as are the larger islands, but I'd need to get to my laptop for that.