the dwarf/quality combo was the only one I knew about off the top of my head.
Our table plays with a rule of no extended optional twink races (pixies, centaurs, and vitas'ed metavariants are included in this) and sometimes even no trolls (too easy to twink). As a result, pixie and shifter options actually hadn't crossed my barren wasteland of a mind.
Daradrenalin was something I hadn't noticed either, though.
Likely what I've been seeing reference to in posts here and on dumpshock is either pixie or shifter and increased [attribute].
Thanks for the info, I just wasn't sure if there was something I was missing.