Have ads that are relevant to the user.
A partnership with onlyfans for instance to show profiles of creators based on filters the user has put in. Example: top, interested in bears show ads to bears on OF.
Example: Bottom interested in trans show trans tops(or just trans) on OF.

This would be much more relevant than the ads we see for games etc.

Also having an anonymous way to pay for Grindr and a more affordable subscription model would be nice.