Seems better than some suits making arbitrary decisions.
Hopefully it also avoids all of the stupid disclaimer-style content warnings. I know it's not games-related, but if you visit a UK cinema chain website, the film descriptions now have stuff like "Contains mild scenes of peril" (that's for kids animated movies, e.g. Toy Story) or "Contains strong language and fatalities". One even had "Contains some scenes of a sexual nature and boxing". WTF, boxing? Oh noes! It won't be long before we're staring at a blank screen in case anyone gets offended or upset.