User blog comment:Blackendedsoul/Gap/@comment-3563898-20130417204812

Hmm, I would say that there is a significant in power. However, I think that if there is any pirate crew that can be a 5th Yonko (I know it doesn't make sense, bear with me), it would be the Doflamingo Pirates. They seem to have a lot of influence in the New World and Doflamingo himself is one of the more powerful pirates we've seen thus far, demonstrated by the Navy sending an Admiral to get him after his resignation from the Shichibukai.