I see a lot of the same monsters outdoors but when i travel to the desert part of Skyrim, i want to see giant scorpions, serpents, coyotes, rock monsters (Replace the name Ash Guardian), Giant lizards with crystals growing on their backs. Those are my desert themed choices. Comment on what you want to see in Skyrim, not just the desert!

There is no desert in Skyrim. The closest desert country would be over the border in Hammerfell.
With the next DLC happening in eastern Hammerfell (or, at least, that's the most popular rumor now being propagated by some mysterious and unknown party

), you may get to see desert creatures coming up out of the eastern reaches of the Alik'r, up to the steppe country and foothills of the mountains ranging along the Hammerfell - Skyrim border.