Ok, so I have a theory relating to the third guy in the hospital in the opening of The Phantom Pain. The guy Miller asks about. I'll admit that some of this may be wishful thinking on my part, because I think it would be interesting, but I have a reason to think it may be true.
So I was thinking about the new style that Kojima is going for in the cutscenes with the camera following the action in a continuous, fluid motion without cuts. I don't think this is coincidental, nor do I think it exists simply to create more consistency between cutscenes and gameplay. It really hit me during
this scene before Miller and Snake get on the helicopter and the Strut collapses. The camera doesn't just shift with the ground that's suddenly slanted, it falls violently, as if we were looking through the eyes of someone who lost their balance in the shock of the collapsing strut. We even see the shake of the camera as he struggles to regain his ground. I believe the camera represents the player, and I think in Phantom Pain it will be revealed that the third man is an MSF survivor that was on the helicopter with Snake and the others when it went down. The Phantom Pain will allow us to create our own character that will fight alongside Snake and the others as the last survivor of the MSF soldiers.
Now, I'm not saying that we're not going to be playing as Snake in The Phantom Pain. I definitely think we will. But I think maybe we'll have a choice on certain missions, much like Peace Walker. Snake will be necessary for the story missions, but we'll be able to choose another soldier for others. And if they include online coop like in Peace Walker, we can't all be Snake. What if we were able to create our on avatar that would represent ourselves rather than a faceless, balaclava clad soldier like before? And what if we could carry that same character over to Metal Gear Online? I realize this is maybe a little far-fetched, but this game has me more anticipated for its follow up than any game has in a long time. It feels like Kojima is more inspired to make this game than he has been for any other in a long time and I can't help but wonder what he has in store.