The sad thing is Obama has until January 2017 to top the Cuban fiasco. My money is on ending the ceasefire with North Korea by surrendering to them.
He's more likely to close the Gitmo prison by pardoning the remaining muzzies. That would be well within his authority and would build on his new friendship with the Castro brothers. It would also fulfill one of his campaign promises, and most democrats would applaud.
He can't abandon the Guantanamo naval base without congressional action, but most democrats don't know anything is there but the detention center.