A thought occurred to me after sleeping on The Last Jedi. All that remains of the Rebellion is the ragtag team aboard the Millennium Falcon and the small possibility of allies on the outer rim of the galaxy. Perhaps this is where Lando has been hiding, having returned to his pre-Resistance state like Han and Chewbacca, and then maybe the Rebellion finds him while searching for recruits to their cause, either by accident or deliberately on the behest of Leia. I think this would be a much better use of the character than what I've seen other suggest in lieu of DJ in The Last Jedi. Assuming he returns at all.