For full inclusivity it’s the only option. However, in reality it will just be a category for Trans women.
Men will not compete in this group as there is no prestige attached to winning as the trans swimmers will be of a much lower standard. Trans men compete as they have no chance of winning against trans women.
Plus the times in the Open category will be most likely be compared to the Mem’s and as a result will fall way short, as let’s face it Lia who was winning almost everything in the women’s category was fairly mediocre as a male swimmer.
The truth is that the trans women athletes can only be considered ‘elite’ athletes and win if they are competing in the women’s category. I don’t think this fight is over, The TRA and their allies on Twitter are probably going ballistic.