Which is perfectly fine for your home game. But, what about Adventurers League games? A new PC race has to be as broadly applicable as possible. Meaning that this is very problematic.
Note the title of your book. "Humanoids". Not demons, which are essentially what a draconian is.
Does this mean we can take lemure, run them through a horrific curse and we get angels? Neat.
Fair enough. I'll admit to my own ignorance. My point is, once you've gone that far, these aren't actually draconians anymore. No more than if you took demons and ran them through the same process. But, again, as I said, once you strip away all that flavor, since it doesn't actually apply to a PC race outside of Dragonlance, these aren't draconians anymore. All they are is a stat-block. Think about it. I'm a draconian that was born, have no ties whatsoever to Takhisis or anything in the Krynn setting, and I'm good aligned.
In what way, beyond a stat-block, is this actually a draconian?
Because Margaret Weiss wrote all the material for the new Draconians? All the novels and source books? Really?
A quick perusal of the wikipedia article points to a Bestiary written by Andre La Roche and Cam Banks.
Heck, a bit more research shows that Noble Draconians are the creation of James Chambers in an unpublished story, Swing of the pendulum.
https://groups.google.com/forum/#!topic/alt.fan.dragonlance/O4-7Nkxyaco
So, yeah, keep trying to appeal to authority. A fan fiction story that makes it way into a 3rd party supplement in 3e, some thirty years after the setting is released isn't exactly my idea of a strong canon element.