After reading New Avengers: Illuminati, I think this series will mark the fall of Iron Man. Tony Stark has had a great run, but let's face it:
1. His popularity isn't anywhere near where it used to be. 2. Just about his entire rogues gallery is unusable because their concepts are outdated (Mandarin, Justin Hammer). 3. Stark is being set up to receive a lot of comeuppance for the Illuminati's actions.
Civil War will either mark a complete 100% rejuvenation for Iron Man or it will mark Tony Stark's death. I sense the latter will occur with Iron Man getting crushed (quite literally) at the hands of a VERY ANGRY Hulk once he returns from his exile.