Agreed. Bernie is more successful than they had planned. He will demand a lot in return for support of the Dem ticket. He presents a similar quandry for the Dems as Trump does for the GOP. How do prevent the alienation of their supporters in the General Election?
He doesn't need to gen up any "third party" I'm sure the SPUSA can spring to life in a heartbeat, thrilled to let Burny put them on the map.