The same is also true for event restrictions. A better interface would be to allow the user to select multiple gender options instead of only one.

I would also like to see this feature. 

I've tried to do this by enabling the "Require Up-Front Payment" option on the event. However, when I save the event, close it, and re-open it, the setting has been cleared. Your support team tells me that this feature won't work if the event itself is free.