Agreed - because he’ll say “I’m running with Elizabeth Warren and I’m not running for re-election”. Those two pieces are worth a lot of votes.
0bama needs someone in to cement TPP, which effects permit POTUS to add to it for at least 4 years, as the actual contents would be able to be kept secret for that time period: https://www.washingtonpost.com/opinions/trans-pacific-partnership-treaty-will-help-neither-workers-nor-consumers/2015/03/31/145e98ba-d727-11e4-ba28-f2a685dc7f89_story.html