Not sure it would be viable. It would be surrounded by hostile powers and completely landlocked. How would it survive?
Kurdish independence and American military support for it should have been American policy from 1991 on.
The Brits were wrong to accede to the Sunni demands for “Iraq” under a Brit-appointed Sunni Hashemite “King” as reward for the Arabs help with the Brits against the Ottoman Turks.
They helped install perpetual Sunni air of superiorty in Iraq, against the sizeable Shia and Kurd minorities and aided the cause of the sectarian strife that continues today.
The Kurds are our allies. It’s time to recognize Kurdistan and work with them to supply the Iranian opposition (and the opposition to ISIS too.)