M-Rated Entry?

[Super_Boom]

Maybe Fire Emblem, if the next game has mandatory incest.

In seriousness though, I'm not sure any Nintendo IPs would necessarily benefit from an increased rating. I did a quick Google search on the Uncharted series, which I found to feature mature content without feeling like it was trying too hard, and apparently all four games were rated T. If Nintendo were to push any of their IPs past that level, I feel like it would be trying too hard to appeal to an audience that just wants sex and violence for the sake of having sex and violence. Honestly, that was a big reason I didn't bother with the Bayonetta games...just looked overall unappealing to me.

I could be wrong though...so I'd be curious if Nintendo could pull it off somehow. I just hope they would have a solid reason for doing it...rather than just novelty.