If (big if) these girls can compete on merit (doubt), good for them

Yeah no, because

I can also see how certain teams wouldn't want to face teams with girls on it.

This is a bigger deal than you're saying. It's not just "certain teams" who might consider it an issue, but also individual players and entire communities. There are many young men--certainly the best men--who are raised not to hurt girls. Period. There's no exception in their upbringing. They might have to incapacitate a hysterical lady a time or two in their lifetime (which will be done with the minimum force necessary), but playing at brutality with actual brutal physical engagement is simply not on the table.

Any real complementarian community is going to have this as a bedrock value, and stick to it.