As for me, it didn't bother me cause Sutherland was cast as Big Boss. Not Solid Snake. & as we're all aware, Big Boss's voice did change when we saw him in MGS 4 so it was appropriate that they cast someone else as Big Boss for MGS 5. Anyways, it would've been nice if the ending did go into the beginning of MG 1 cause that would've hinted to MG 1 & MG 2 being remade. That's a pipe dream now...