Reforce the Prohibited Games List.
Pretty simple actually. With the new Steam policies about getting more NSFW games and more Illusion Games SFW versions in the same platform, i'm sure that list is pretty outdated and needs more games getting banned. (Koikatsu: Party is SFW if you don't include a specific patch from the official game to be NSFW).
And not more sexually, high gruesome or extreme violence should be there too, Hatred is the best example nowadays and isn't include in the list. Postal 2 isn't neccesary for being more ironic & sartastic rather than polemic because yes.
Games being bad and only popular for the things i mentioned earlier should be there too.
More than that, probably i missed something but the idea in general is explained. I saw earlier the counterpart of this idea and that's good, but not in a plataform like this when anything NSFW (even accidentaly) could get you banned.
That's all.
PD: I'm not a English native speaker so probably there's typos.