Beauty Equals Goodness: Very much averted in one sense, even by local standards (see: Blue and Orange Morality) of goodness. It is perfectly true that the eldrae and the other Imperials are an extraordinarily Beautiful People. But by the same processes, so are the Renunciates. And so are the Renegades – even the Renegades who are very, very bad people indeed, by anyone’s standards.
Quite appropriate, really. After all, even fallen angels are still angels.
In another: yes, one of the qualities they esteem is beauty, as a form of excellence. But this does not imply, simple-mindedly, that the beautiful are the good. Rather, the dogma holds that it implies that the good deserve to be the beautiful, and therefore that beauty ought to be promoted by the sophont in those places where blind nature and random chance got it wrong again.