EDIT: It's funny seeing this kind of point being made about MGS V, that it's just as boring and repetitive as you allow it to be. I don't think it's completely wrong at all, but I've been at this for a long time already. This is one of the main things people say to defend Crysis, and I love that game. But I don't think just one of the arguments is the right one. It's both.
If you have this super well designed mission that allows you to approach it from many different perspectives and playstyles, that's incentive for replayability by itself. You don't need other missions to be basically the same thing and with little environmental variety. Don't worry, I'll replay the mission many times because I enjoy it, no need to actually have that same design repeating itself.
I replay character action games many many times, and I still think Dante's part of the game in DMC4 was half-assed. You'd think it doesn't make a difference, since I'll replay those levels many times anyway, but it definitely does.
Futa de Madre.
FUTA
Acronym for "Fucked Up The Ass"
Hey babe, ya walking a little funny. Did ya get FUTA?
Sit down, boy, let me tell you about the greatest thing ever created. It's called futanari.
Don't google that at work.