So Draconis are desert dwellers?
I'm really missing your point. Narven ARE already desert dwellers.
Now tell me this. What makes you want to play a Draconis so so much that makes you not want to play a Narven with horns? Because honestly, you just seem to want Draconis. Not a reptilian race living in the desert.

Swamp Narven are still Narven. Just live in a different place and got different customd. Just like the Northern people are a different Nation from the Empire. They are all humans though.

So now. Either you start giving actual suggestions and let me name the races. Or then please leave because you are distrupting the thread. If youd describe a Draconis, I'd say Narven. But you say its not the same. It is.

Go find a better GM if you dont agree