I wouldn't mind an option to turn the blood down to reasonable levels. I remember when Mortal Kombat first came out, and you'd lose about a gallon of blood every time someone punched you, it didn't make the game cool for me (note: I was the rare exception back then, everyone else was willing to overlook abysmal gameplay in exchange for red pixels). Same rules apply today.
Don't get me wrong, I love chainsawing me some Locust, and I rarely if ever turn on content filters, but if the blood is excessive to the point of stupid, yeah, I'll usually shut it off. Eventually you hit an age where it just isn't that cool anymore.
- J