If they did that they would lose hath of there fan base the hawk games are not about language or gor or sexy stuff. It's about the fun fast paest gameplay that we all know and love. It's also about the bonds we make with others and the team work and much more.
I think it would reduce the number of players.
Would it be cool, maybe, I mean I care more about the solid game play than the gore/sex/language.
But at the same time if it was a paintball game I would be less interested. I think it has a good balance.