I thought about that possibility as well but the last two seasons screamed “I’m only here to advertise the manga”. If they’d decide to continue the story in anime form, they’d have to basically start over from the beginning which doesn’t really make sense anymore with the existing adaptions. I think that’s maybe something that could happen in 5-10 years. But even then, as an anime alone it wouldn’t make enough money I think. Adult series often get aired during the night which doesn’t attract a lot of viewers. A manga continuation would be much cheaper and less risky. I’d probably prefer an anime original ending, thoughAs for an actual continuation, I think that the less riskier and less controversial choice would be to continue the story in anime form. That way, the manga remains intact and forever solely Miura's work as it should, without being exploited, and whatever the outcome from an anime adaptation would be quality wise, it would't be that important really