Ability to filter users based on their gender identity; Man/Woman, Trans Man/Trans Woman, Non-binary/Other.
This would allow gay and straight people to only see users of their preferred gender. It would also make it easier for trans people only looking for other trans people, since the 'Trans' Tribe is full of cis men looking for trans women.
Jack Hurricane commented
Or kindly allow straight people to return to any other fucking app or dating community/service which exists… Except this one. Except the one made exclusively for gay men, seeing as they beat us and laugh at us in all the other ones made--not repurposed for--but made for straights and girls. These safe spaces continue to be safe for its intended user base. Grindr will fall like a black and yellow demon into the pit of inclusive hell, if it continues to shit all over its user base