Oh woops I thought you were him.
I don't know anything about "should" but I know that for the foreseeable future we 'will' have 2 parties... unless Trump drops a full declass and wakes the country up with a major slap in the face and everything gets so shaken up that dozens of parties form out of distrust of one another.
I'm talking 9/11, Benghazi, Iran deal, NK, CIA, all of it. Only that could break the 2 party system.