Honestly I think a more actionable change based on things that are already on the site would be to make secondary genre tags on our works actually have a mechanical function in terms of search or filtering.
Right now, secondary genres we pick are pretty much just descriptive. My ranking determined entirely on my place in the "Action" Genre, and that's fine, but let's say hypothetically, somebody really liked my comic and went "hmm, okay, Action-LGBTQ+, Fantasy.... what else has those three tags?
If we had a way of searching things by narrowing down to two or three genre tags, somebody who liked my comic would be recommended stuff like "Magical Boy", which I think they'd almost certainly like. Unlike the current system, which recommends just whatever is popular in the "Action" genre.
Basically rather than shuffling all around the genres we have, make the genre combinations have a function for searching or filtering and recommendations. Combined with adding frequently asked for genres like "Paranormal" and you're onto a winner. "Okay I want... Paranormal and Romance....everything with those two tags in order of popularity" BOOM, the site recommends you all the stories about straight romance where people are in love with werewolves and vampires and whatever.