English would benefit from 13 genders instead of two.
I don't think adding more gender options would solve anything. Discovering what pronouns and gender you identify is more of a self thing. You've got to try them all on and find the one or ones that just fit right. No one can tell you which ones to identify with and sometimes there isn't a label for who you are. My "Epic Journy" or "EJ" as my mom calls it is full of changing pronouns and identities back and forth discovering new ones and creating my own. It's great that people are starting to change, but setting in stone more "options" isn't going to change much in my opinion.