I'm sorry for not replying sooner, but
@Wes hasn't answered my own question, so I'm not entirely sure to what standard I should hold this article to. They're not wild animals and are a civilization, yet they're also antagonists, which could be used to argue for lowering the standard by assuming that such a level of detail is not necessary. I would rather hold them to a high standard, but I also know that's a heavy burden.
Focusing on the article itself however, the appearance section is much better, though it can still use work. Though it's pointed out that the Kudah is unguligrade and walks on hooves, is it dog-legged as well with the joints alternating, or is it 'straight' like a human? The mandibles should be described more on their own as well, rather than being compared to a Karshvick. As-is, there isn't any point of reference for a player to get an idea of how those would be at all. Overall, the more detail you can provide as to how this looks, the better, especially since there's no artwork.
Moving on to the physiology, again, don't mention the other species. Describe the Kudah on its own, since comparing it to the Karshvick gives very little point of reference. Going with its exoskeleton for an example, how does it compare to a human nail? Is is just as tough but thicker? Right now, if it's as flimsy as human skin, I imagine internal damage would be easy since they'd be very squishy. The info under "Role Within the Empire" and "Political Chess" can go into another page. A dedicated culture or guide would do fine, but so would the current species splash page.
With their psychic abilities, you're going to have to give more information on what they can and can't do. Otherwise, there's too much up to interpretation and power-gaming from the get-go. As they're RPd and players like them however, I believe you'll likely be able to expand on this even further. The same or similar goes for "Transmogrification" as well; you can toss out the example with the Neko however, since it's unnecessary. What you'll need is some sort of brief, unspecific detailing of how it does so. I'm guessing something about it absorbing eaten DNA, and choosing to splice it in with its own, or maybe developing specialist cells that are focused on taking on foreign genetic material and morphing. There' a lot of options. A general idea of how much genetic material and nutrients/food they'll need will also be handy.
I point out that the study you linked is a really bad one. However, a cool idea for sci-fi is a cool idea for sci-fi. This ability should be chosen not because it's feasible or backed by science, but because it's a nifty mechanic and it's fun.