In for himself
My well developed paranoia can't stop reminding me of the obvious reason Assange is pushing for Trump. They made a deal that if Assange helped Trump win the election, then his charges would be dropped.
Assange, just like Trump is so narcisistic and egotistical that he would destroy the world in order to save himself. Maybe Trump sweetened the deal by offering him a SCOTUS position, who knows? Nero comes to mind here.