As gender definitions continue to evolve and legislation needs to affirm sex specific bathrooms, I await to see fill-in-the-blank restroom designs.
Perhaps the lavatories of the future will also feature trees and fire-hydrants for the urinary needs of Otherkin, that is people who believe themselves to be animals. After all, when it is being asserted that race is a social construct, we might be too close-minded to assume species isn't as well.