Two guys in armor who will just beat the crap out of each other in NY City would be cool, but come on, wanna make it a simple action sci-fi movie?
Mandarin is a criminal mastermind, a genious on par with Stark, and his mastery on martial arts plus his ten power rings granted him to give IM various run for his life.
It would be great to see IM breaking into the flyin fortress of the Mandarin and find him wearing a cape and an elegant, loyal costume, saying:
I've been waiting for you Iron Man, this ends now, you fool, you worshipper of technology!
I've been insulted at the Larry King show, but this is just crap!