No, not Transmogrifist. Too many lost levels -- if you could get MT and shapechange it'd be one thing, but not worth it.
Swiftblade COULD be worth it, but I have a build which is likely to be more fun. How about a Sorc/Totemist/Soulcaster gish? You get armor (Ankheg Breastplate), move-action at-will Dimension Door (Blink Shirt), and when you polymorph you can pounce with your natural weapons (Sphinx Claws). Plus you can rock Midnight Metamagic. Use your domain ACF to get the Incarnum domain, it gives you Incarnum Spellshaping as your domain power and you get Incarnum Apotheosis to be amazing.
Something like this:
Azurin Sorcerer 4/Totemist 2/Soulcaster 4/Incantatrix 10
ACF: Domain Sorcerer (Incarnum domain)
Feats: Midnight Metamagic, Incarnum Spellshaping [bonus from domain], Extend Spell, Persistent Spell, Ocular Spell, Open Chakra (Arms), Arcane Disciple (War)
Now you can use Instant Metamagic with Incantatrix to Ocular/Persist Incarnum Apotheosis and fill all of your soulmelds to the max. Polymorph + totemist soulmelds which boost natural attacks FTW.
And, if you really want to be ridiculous, take Hidden Talent (Expansion), Psycarnum Infusion, and Psionic Meditation. Then google Psycarnum Infusion and Midnight Metamagic for how to abuse that.
EDIT: Forgot Arcane Strike