Aren't there sports where the inclusion of trans women competing against women wouldn't be controversial though?
Off the top of my head - not anything with speed, stamina or strength at its heart, but sports based on precision and accuracy, or that are mechanically assisted? And where competitors safety wouldn't be endangered by having Male-bodied opponents.
So - ice dance, synchronised swimming or diving, diving itself, some gymnastics, darts, snooker. Possibly some motor sports like rallying? And archery?
So rather than a blanket ban it would be up to each sporting federation to decide.
But in any case - surely its easiest to have three categories, male, female and open?