So, you are accepting them? If you weren't, why ask for details?

So, what can these dracons do that's different? A great deal, probably. It is likely a difference of culture more than biology, as dracons come from a desert with many independent kingdoms, cities, and states. They don't have the inherent powers of dragons, apart from a weak acid breath, but they do have many of the superficial features that dragons have, such as fangs, claws, a tail, horns, and a great deal of physical strength. The males are quite strong, and the females are quite agile. As a species, they are civilized, for the most part, save for some migratory tribes. 

One detail you might find interesting is that dracons did not evolve naturally, but were the result of an magical mixture of humanoid and dragon blood. As I said before, I could link you to outside sources, but until you tell me straight-up that you have let them in, I will spare you a more detailed explanation, unless there are some specifics you simply must know first. 

And these dracons are no more dragons than a monkey is a human. Similar, but clearly and obviously operating on two different levels. 

And no, you don't have "everything." No one does. You even contradict yourself: "The whole point is that I already have everything. I dont have centaurs or halflings, or minotaurs either." So, you have everything, but not halflings, minotaurs, or centaurs... which means you don't have everything.

Don't be so close-minded. You won't make many friends by excluding people.