The Middle East would be better off if Iran was eliminated.
Something tells me the entire map of the Middle East will look very, very different in 10 years.
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The only part of the map of the Middle East that has changed since WWII is Israel/Palestine, despite several brutal wars.
It won't change a bit in the next ten years.
In 100 years, though, it will look different. The Middle East is going to go through a transition similar to what Europe went through from 1910 to 1992. And it will be just as ugly and vicious. The US would be best served by staying as much out of the way as possible.