Let the modders handle all the mature content, that keeps the game accessible to the young'uns but still gives the option for gore etc.
BGS doesn't make games with a rating in mind. They make their games have a certain atmosphere that's appropriate for the overall game. Skyrim by definition will be more brutal and bloodier than Oblivion was. Mr. Howard already stated this in the GI Podcast. Plus, as the poster above stated, TES is typically geared towards a more mature audience. I'm sure plenty of children will play it regardless, but they wouldn't be a target group.
I don't necessarily need blood splattering on my screen. However, I do want the feel of combat to be intense and brutal. No battle should turn into a snore fight like it was in Oblivion. There should be severe risks if you make a bad mistake, so one should always be alert.