I'm all for more genres but it usually kinda goes without saying, this is the Tapas forums, we hardly have any influence over what goes on in the meta of Webtoons lol
Also, your first and third point overlap and somewhat contradict each other? When you're in the mood you can't find any, but you just said it's everywhere too??
And about your fourth point, I'd personally like to see like 3-4 maximum genres be a thing for everyone across all sites, since like.. people mix and match a lot nowadays anyways, so like putting BL or GL in the thumbnails isn't too big a deal for me personally