I can't think of any...
Where it is fine to have mixed sport (e.g. show-jumping / dressage / etc.) then it is not relevant - otherwise, it is relevant.
It is important to clear up little bits like this in the consultation period.
However, this is also guidance, not law - if you set up a single-sex sport (e.g. billiards for women / women's rugby football or cricket) then the law since 2010 and clarified now in the SC judgment in 2025 is that a transwoman is a man so can not take part - there is absolute black and white in law. Whatever guidance is given, it will not be legal for a man pretending to be a woman to be allowed to take place if the sport has been set aside as single-sex under the various exemptions. Full testosterone / reduced testosterone / no testosterone - irrelevant, if they are a man (or transwoman) they can not join in.
It will obviously be enormously helpful if the guidance has equal clarity - so absolutely worth highlighting as a response to the consultation, but even if the guidance is wrong or implies something else, it can't actually change the law.