I think that the filter we already have is enough, as stated above"if you're old enough to torrent, you're old enough for porn"
I mean, when I looking for porn I'm looking for porn, when I'm looking for stuff to waste my time on, I definitely don't want the borderline H stuff filtered out, there actually might be a plot in the series.
In this way, they are no different from the day time soap operas that housewives and my mom watch, full of borderline porn.
+ If a parent lets their children onto a site like this anyways, I think the kid is screwed already, no saving that, and an adult looking for something for their kids to watch us fully able to pick out the stuff s/he wants their children to watch/read. For this, the current filter is plenty enough.
Sure I do agree the borderline hentai and gore are not genres suitable for children, but I see no problem youth watching them, if they like it, it is not probably gonna damage them anymore.
So, let the parents do their filtering for their kids, youth will like what they lime and watch it on their own accord. I mean, if parents let their kids play games like CoD, etc, the kids are old enough for orderline H.
So, the only thing enough to be filtered out is straightforward sex.