If it's gonna be more like shopping filters then, that sounds much better! There's room for improvement though. Like a lot of room.
First off. That massive list of genres. Way more overwhelming than I'd like it to be. And non-aphabeltical too? Bad. Ok, so let's keep the same genres we currently use, and give us the ability to look up 3 genres at once. (Maybe add Anthology for @skicoak , bc that's his jam.) I do think Anthology should be it's own actual thing since it's not tied down to a specific genre.
Along with looking up genres, let's add tags into the mix. So these are where the leftover genres in your list would go, but with a much wider span of content to look up. The genre-specific tags are the default options, but you'll be able to type out whatever. You could look up tags on their own already, but you still had to filter through the genres from there.. This would fix that.
Subscriber numbers.. Could be narrowed down further. Maybe by the milestones and just typing a specific number.
Format's a neat addition, but let's add color too. Give options for full color, black and white, monochrome, limited palette.. Maybe some others options well?
Let's also add completion status? On-going, Completed, On Hiatus, Cancelled. It'd be nice to know beforehand about how the story's going. If it's even gonna continue..
On a similar note, we gotta add Episode Numbers. 1, 5, 10, 25, 50, 100, 150, 200, 250, 300, 400, 500, 500+, and.. Just plain typing a number in!
Language? For the accessibility, man. There's users here who go out their way to translate their content to a different language alongside their english version, no reason to leave em out.
And we can't forget about free and premium. Make check boxes of those too. And if you check premium, have additional qualifier for ink paid per episode. 100-150, 150-200, 200-250, 250-300, etc..
In short.. Filtering by Genres, Tags, Format, Color, Completion Status, Episodes, Subscribers, Language, Free, Premium, Ink per Episode. Go big or go home, lol