It's already rated T, however I do feel that T is perfectly fine for the game. The art, feel, and style doesn't feel M and for me, just for me when I see an M rated title I get this idea of over the top violence, it comes with this attached idea that M means this and T represents this. I would like to think that Bungie made the game not specifically geared towards a T or M but that's just what it got rated. Unlike the movie but that is an entirely different discussion. Personally I hope bungie wanted to make a game that appeals to their audience. And with the audience it is teens and up. I don't see why the rating is a big deal. T doesn't mean watered down experience, it just means that the ESRB feels that this game is appropriate for Teen and Up. Those are just my thoughts.