I apologize in advance if this thread is completely inaccurate. I'm not entirely educated on the Mongol political system, as it is.
However, from what I understand, whenever a Khan died, a new Khan was elected. This meant that when Ghengis died, all the Mongols had to go back to their homeland to elect a new Khan, basically fucking over any further plans they had for Europe.
Let's say, though, that somewhere along the line, Ghengis proclaims a hereditary dynasty of Khans, and names an absolute successor to his empire.
Two questions
1. Would the other Mongols/lesser Khans stand for this? I don't know how strongly the Mongols felt about their democracy, so I have no idea if they would take this as much of an affront as, I dunno, MacArthur declaring permanent martial law in the United States, or something.
2. Say Ghengis dies as per OTL's schedule. How does this new hereditary system affect the situation in Europe? Does his appointed successor simply take over and continue on?