Everything about this game is strange. First Hayter not being Snake, also Kiefer voicing 3 different characters, 2 of which have hidden faces. Ishmael with bandages and the medic has his face strategically hidden in every shot. Plus, taking the medics model from the PC version shows that he basically looks exactly like Big Boss. Plus in Ground Zeroes Miller lying to Snake about not knowing about Paz's true intentions when he already told him in Peace Walker that he knew everything from the beginning and he was the one that brought her in.
I'm subscribing to the theory of there being more than 1 Big Boss, and the one we play as is part of the genome project or something and is being tricked into thinking that he's Big Boss. We already know that Ocelot and Miller are both working for Zero, and Ocelot said he would help Zero with the genome project.
Kojima is gonna Kojima us I feel.