As you well know, the Pragmatic Sanction and War of the Austrian Succession happen because Charles VI, Holy Roman Emperor had at first no children and then only daughters. Suppose though his son, Leopold Johann, born just over a year before Maria Theresa had lived to adulthood? Say he lives to either Mara Theresa's lifespan or Maria Anna's. What are the long-term repercussions of delaying by a generation or more, or not having at all, a war of the Austrian Succession? Who does Archduke, later Emperor Leopold marry? Who do his sisters marry given that he is going to succeed their father? Have at it.