I genuinely hoped for a mindfuck of a story rivaling mgs2, or some fanservice that would put mgs4 to shame at least.
Didn't get either.
I wonder, had Kojima known he'd be fired after the release of TPP he might have given us something epic to end on.
Short version: he didn't
Wasn't even a David Hayter cameo, which a good chunk of the main cast seemed to be hinting at. Pretty disappointing.