Or they could be talking about building a totally separate gender neutral block. As long as it didn’t reduce the number of single sex facilities I can’t say say I would have a problem with that.
Not possible at OT - the design of the stadium means that each section is separated from the others and most are upstairs - we climb about 8 flights to get to our section and there's no room at the bottom for any sort of "block" (which in any case would have to serve all the other levels accessed from our staircase.) On our landing/section, as I said earlier, there are 2 toilets, one of each sex.
In any case, you couldn't have people going downstairs to the toilet and then back up again, it would be a health and safety nightmare.