I have yet to see a game rated M that doesn't deserve an M rating. Whether it is for the constant use of blood and gore (I'll admit I would flinch at that when I was kid, but now that I'm older and I've lost my soul, I don't care) or swear words (Yes, kids don't need video games to learn new words but come on, let's not infuriate dumb parents more than necessary) or nudity.
However, I'll admit I would expect M rated games to be handled more, well, maturely. But that's just my own wish. It's like comparing American Pie with Schindler's List; both wouldn't be apt for kids but one of them is about retarded asswipes being douches and the other one is more dramatic and serious.
I'll agree with the fact that if a game is willing to add nudity into a game, then do it correctly and all the way. Don't shy away as if you were the local perv hiding inside a locker in the girls' dressing room. If you're gonna use gore, show real gore. Don't just show mild gore scenes or, like MK did, cartoony depictions of gore that do not follow some of the game's same standards.
A couple of examples come to mind:
-Gore in games: Like Yahtzee said, if you're using gore and going as far as to add an X ray view where you can bones being shattered in great detail and eyeballs being pierces, then why not who wieners being cut in half? I mean, since you already pushed the envelope that back, why back away then?
-Nudity in games: I recall playing God of War and watching half naked whores wiggle in anticipation as Kratos approached them. Now, I'm not being a perv, but why are whores always shown from the breasts up? I know they're naked, I know their purpose, so why not show the rest? That just makes it look wrong. Like if the game is saying "Hey, check out a pseudo sex scene. But it's not exactly that! It's just hinting at it. So if your parents ask, it could be anything!". Another example would be Dragon Age: Origins and the camp scene. I was seriously expecting to see naked people having sex, not people wearing ridiculous underwear and flashing scenes of giving each other what looked like back massages. Again, it's not like I want porn in my games. But you have this realistic games where you must be wise during battle, where each set of armor counts, where your decisions change lives and when the sex scene comes up, it doesn't seem/feel real.
I know that games are just avoiding another Hot Coffee scandal. And I know that thanks to that dreadful AO rating, games will do anything to avoid falling into that category unless they want to go bankrupt. And I hate that games will never be able to cross that boundary set up by people who are not even gamers. M rated games are, by nature, aimed towards adults. If a kid plays GoW and sees something he cannot unsee, it's ultimately not his fault. The kid was curious and tested his luck. It all goes down to the parent; it's their fault for not supervising their child.
I hate the fact that games are seen as villains. A movie like, let's say, Terminator 1 has a very explicit sex scene where you can see a lot of things going on. That's usually cut off the TV adaptations but it's there. So is it considered porn? No, because it's just like a 2 minute scene. But if it was a video game, you bet it would get an AO rating.
But again, sadly, we won't be able to break away from that because you'll always have the dumb parents asking...
Also, I enjoyed the Catcher in the Rye reference.