MGS has been awful for the last 3 games and now seems to be loosing/changing it's personality into some overly serious game.
Graphically the game looks great. GZ also made good on the promises on the gameplay, but 5 looks to be taking MGS into a direction I'm not a fan of.
Even these music choices are terrible and give off a sense of self-indulgent seriousness that is tiring. MGS3 has a song that tells you about game mechanics while being a loving parody of James Bond. MGS5's trailers have featured songs that love to hammer the point that "this is DARK and SNAKE IS A DEMON". It's all a bit sad.
I expected a story trailer that would elevate my fears that the story is pointless. Prequels usually are and yet MGS already had a prequel that set everything perfectly. Now comes this game. Is this game going to give us the mind bending revelation that the idea of the Big Shell was stolen! Oh boy!
MGS5 will probably be a good game, but what it means for MGS is almost so off putting that had my love of the series not already be dead, I would be seriously mad at this game. As it is, I just shrug it off and watch MGS as it continues to burn.