Updates
Regarding the Tarassian Union, could you please rename Firron to Thalaven please?

Now the Tiyanki Territories retcon...
The Expanses have been redrawn. Perhaps changing the colour on the map from purple-ish to something more orange-ish? It would help visualize the difference that they are indeed traversable compared to the badlands. (Optional: if you can do it, maybe give the Teal Expanse its namesake's colour?) 
No need to fit in all the small nations. I'll sum up the most important planets and rename the Expanses.
Most important worlds (somewhat in order):
Arkania
Kelidon
Hedunia
Enthralla
Owetta
Benthawui
Nal Ch'Ratta
Kirllia
Trython
Thrallum
Galreen
Vurk (Needs to be Vur'Ten!)
Sellexia
Alaria
Tiyana Vrok
(Glee Nisalm)