What would the results be if HRE Josef I's son, Leopold Josef succeeds as HRE Leopold II, marries, and has children. However, he only has daughter(s) when he dies.
OTL Karl VI is dead (whether by poisoned mushrooms as is rumored or not), but his son, Leopold Johann survives.
Now, do we still get a modified/delayed war of the Austrian Succession? Likely to be five-way succession battle (Saxony-PLC, Bavaria, whoever Maria Theresia/Maria Anna's married to, and whoever the daughter is married to)?