I have a crazy idea. Maybe Ground Zeroes (which at the time of this comment has been confirmed as the []
I have a crazy idea. Maybe Ground Zeroes (which at the time of this comment has been confirmed as the prequel) will feature Hayter voicing Big Boss. Then after the whole coma thing 9 years later in the Phantom Pain, it will be the new guy due to Snake not being able to talk for years and getting older.
I base this theory on the fact that he says he was never asked for MGSV: The Phantom Pain, but no one ever asked about MGS5: Ground Zeroes