I think Hayter has been pretty good throughout the series so this is frustrating. It isn't just about the voice, but it is also about the character too. A voice goes a long way in bringing life and personality to a character, especially one who has been voiced by someone for so long. The voice of Hayter is the voice of Snake / Big Boss. Sutherland is a great actor and I'm a fan of his and I'd be happy with him being in the game as anyone else but Snake, I just can't get behind this idea. I'm sure at some point we'll hear Snake reminisce about something that happened in the past (MGS3, Peace Walker) and it'll just take me right out.
It is really strange to me... I'm having a real hard time getting excited for the game because they are taking away a key part of such an integral and important character that I've been accustomed too for so many years.