Group multiple search fields with "AND"
Add option to "and" options together in search field, for instance so that you can search for people that are feeders AND feedees. Currently, selecting both options will show people that are feeders, feedees, and both. "And"ing them together would show only people that are both. This would be very nice for mutual gainers, and would make selecting across multiple growth kinks and other kinks much easier as well.
Give users the ability to chose, when searching profiles, if the selected items are search as x AND y vs how it functions now, x AND/OR y. This way users can more easily find other people who share a set of shared kinks, for example.