Unfortunately, the sports that are popular right now are very unfair. Some people are just born better suited for certain sports than others, and some can't play at all. This is not a great situation to start with, even before we consider sex (as you point out, physical disability basically just means some people don't ever get to play). Unless we're willing to totally change sports (which probably won't happen) I think we just have to let the leagues figure it out themselves, and lawmakers can butt out.

By introducing legislation, it opens up all sorts of problems that entrench sex segregation into the law. This is a serious problem, when the current legal environment also means trans women are being sent to mens' prisons. That's genocidal.

So, no politicians. They have more important things to worry about anyway.

I'm sure some leagues will decide to keep sex segregation, and other leagues will determine other characteristics to determine how to separate teams (perhaps by hormone levels in the blood, perhaps by height and "wing span", perhaps by weight, it all depends on the game). Still other leagues will just have mixed games, like chess obviously should already have.

But politicians need to stay out of it. It's just a way to salami slice our rights away.