I can see that, so let me rephrase my question: How would the league increase its exposure by requiring a greater level of safety than the sanctioning body requires? I know that legal issues seldom make common sense (like the guy who sued Sears after losing a leg because they didn't put a sticker on their lawn mowers to not use them as hedge trimmers). That said, we all sign liability waivers, right?
In our league discussion this week, we considered a situation where a pitcher forgot to put on her mask (kids forget stuff), and the coach didn't catch it. If she gets hit, the league could be held responsible for the coach's mistake. Making it a "strong recommendation" leaves some wiggle room. That's our board's reasoning, anyway.