All in all I love a lot of what they have done, fantastic work on custom races, and I put this in another thread but just to make sure it's seen.
A color palette would be ideal for all of these, as would a button to import pictures, and a tooltip to tell you their format and size requirements.
The map theme colors custom races use are an actual problem too, as there isn't enough to pick from. Territory could blur together very easily with several custom races sharing the same base color on the main map.