I don't care for the sound of ASS BURGERS, either, and I cannot understand the insistence on adding a superfluous S to the end of a word that already ends with an S, it seems stupid and unwieldy and only adds to the ASS BURGERS sound, so I never use it. Of course, if you're saying it correctly, it should sound as Ahz-pair-gur Syndrome anyway, but few ever pronounce it properly.
That said, I don't really find your proposed syllables any better. I'm glad they sound nice to you, but they sound liquid and gurgly to me, like something made up by a preschooler. Even if they have some scientific meaning (and I don't see it if they do), I think you'll have a hard time getting the entirety of Scientific Academia and the Autistic Community to switch at this point. If they merge AS and HFA in the DSM, it'll become a moot point anyway, but I doubt the term Asperger Syndrome is likely to fall completely out of use in any case.
But good luck with that. ![Wink :wink:](./images/smilies/icon_wink.gif)