Yeah they opposed Saddam a Sunni power, i assume they will oppose Iranians and the Syrian rebels. Align with Turkey who supports Assad. So not terrible i think in that help hole part of the world.
If Turkey doesn’t go wobbly on us, a Kurdish alignment with Turkey would stabilize that northern part of Iraq. It would probably scare Iran. Turkey, if it is smart, should absolutely forbid Iran to acquire nuclear capacity. Turkey has access through NATO, and they should remain the only power up there with that access.