User blog comment:WillofOP/Fate of the Fallen/@comment-24769684-20150701014345

Impel Down will be enough for Doffy. No one managed to escape by themselves two years ago, it was all Luffy and Blackbeard's doing. Plus he'll have Seastone handcuffs.

People say Doffy could never ally with Luffy in the future due to how evil he is, but I disagree. Crocodile did things that were pretty much as evil as Doffy *cue Dressrosa and Alabasta similarities discussion* but you know how that turned out. They wouldn't become friends or even like each other, but I don't view a potential Doflamingo alliance in the far future as out of the question.