Re: IronMan 2 MKV "Extremis" Costume build W.I.P.
GUNDAM!!! Would you specifically want to do something from the Gundam Wing series, or would you be open to any Gundam series? I'm kind of a Gundam nerd and I think of all the people I've ever seen attempt a Gundam costume, you'd probably be the one to pull it off best!
An Eva from Evangelion (especially the new "Rebuild" movies) seems like it would be right up your alley too. It's got some design similarities to Ironman.