The chapter ends with Doflamingo in possession of Ace's Mera Mera fruit, and a couple times throughout the chapter, it's strongly hinted at that the Strawhat Pirates would strongly want to get it into their own possession.
Which automatically brings up the debate about WHO would eat it in the SH crew if they managed to get it. Luffy already has a power, but if somehow Blackbeard has more then 1, then perhaps Luffy might eat it as well as his gomu gomu fruit. The only non-fruit eater in the team who it really fits though would be Sanji, but he can already light himself on fire lol.
I could also see it going to Colby. He's supposed to mirror Luffy in strength and ambition (albeit, through the marines). And considering they both have started using Haki, if Luffy gets strong enough to be equal to or stronger then an Admiral, Colby would need his own fruit to match that power so he himself could be promoted to an Admiral. And a logia like this makes sense. Not to mention they're friends and if Luffy was going to give the fruit to anyone, it would be a friend.