> EDIT : Dragon Wildshape allows shifting into any Medium or smaller dragon, correct?
no, its medium or small
> Advance HD on a Bozak Draconian, anybody?
while polymorphing into advanced creatures is not forbidden by the rules, FAQ recommends against it
however: Draconian, Bozak from DLCS has Advancement: By character class
> Free Sorcerer 20 (or more, if you can slap shit onto it) per wild shape use? I.e. any Sor/Wiz spell ever available as long as you have a wild shape use available
no, dragon wild shape explicitly does NOT grant spell casting
> (which is always with persistent Unfettered Heroism),
no, unfettered heroism grants 1 temporary AP per round that is lost at the beginning of your next round, wild shape requires 2 AP
> with nice NA and lots of natural attacks to boot?
3 natural attacks dealing 1d4+1? *faints* bozak has abysmal stats (12 str, 10 dex, 10 con)