Re: *Spoilers* Problems caused by the MCU
I disagree with Iron Man having much at all in common with Nolan's approach to Batman. Iron Man is really fantastical in nature (and I mean really).
I really like Nolan's trilogy but one of the things I don't think work that well are the blend of the overall "realism" (in lack of a better brief description) and the more comic elements. The latter stand out as less plausible, while in Iron Man it starts off very comic inspired right from the start so I'm much more inclined to buy into whatever they are throwing out.
That's why I think Iron Man is perfectly in line with the MCU as a whole. All of that really embraces the comic genre and make every fantastical element seem natural to it's own internal logic.