I did a mini TL once where after the Treaty of Utrecht but before the Treaties of Rastatt & Baden, Philip V was assassinated on his way from France to Madrid by Catalan/Aragonese loyalists. He becomes a national hero in France as a result because he jumped in front of a pistol aimed for his wife, however his death revives hostilities with Charles VI dragging Britain and the UP back in after promising to split the realms on his death (the Habsburgs argued that now Charles VI was the only heir of Charles II period because the other French heirs had renounced their claims, dubious as that is). Eventually the French concede, and Charles gains both thrones passing the Imperial titles (including Milan) and the Burgundian inheritance to Maria Theresa and her husband, and the Spanish to Maria Anna and her husband. Ultimately because I didn't butterfly Habsburg initially blood lines, Maria Anna and Charles Alexander have no direct heirs, both their wills (and the general consent of the Great Power who all don't want another War of Spanish Succession) stipulate Prince Benedetto, Duke of Chablais inherit the throne (he however does has heirs ITTL and ultimately founds an influential dynasty the House of Chablais). I can try to find the map, though it was of said world in like 1910).