Will Jon Jones leave the light heavyweight division without being defeated? What about heavyweight?

Presuming that Jon Jones has 3 more fights at light heavyweight and they are Chael, Dan and someone else (I want to say a rematch with Lyoto) do you think anyone will beat him?

At heavy weight will he be as dominant or will his reach be so closely matched that he ends up having less reliance on it? Presuming that he is very quickly propelled into a title fight and also presuming that JDS is the belt holder do you think he will be able to take him out?