The difficulty is there will never be an absolute consensus on what a turd is or whether given game is one or not. I mean one can assert all one wants that turds are X and game Y Is a fine example of one. But without a rational foundation, we can't even get the discussion rolling.
Take The Order 1886. You could make the case that underneath the bow lies a faecal lump, or as gaming journalists have put it, it's all show with little substance. Aside from the irony that we now have pretty much every major gaming publication coinciding with the viewpoint of the most virulent adversaries of gaming journalists as a whole, aside from that irony, we also have a considerable number of gaming forum members and Youtube reviewers not only thoroughly enjoying the game but at times raving about it. I'm not talking about people who just got into gaming. I'm talking, for example, of NeoGAFers.
There, the place where gaming debate routinely reaches unparalleled intellectual heights, where wit is often of near Shakespearian calibre, where arguments are subject to the most gruelling scrutiny, where scepticism is generally not frowned upon, where not many dare to argue from authority or resort to name-calling, where most realize merely asserting things does not prove them, where mods don't use their discretionary powers to leverage and shove their personal opinions down this or that throat, where there's low tolerance for bullshit and assorted logical fallacies, there, in that beacon of critical thinking and free speech, among these seemingly seasoned gamers The Order 1886 has been getting some positive feedback. It's intertwined with candid at times harsh constructive criticism, of course, the hallmark of good faith, and, yes, also the occasional nasty derogatory remark. There you have it.
My humble suggestion to you: if you want to call attention to Sui Generis, for it to reach arguably a wider audience, proceed over to NeoGAF. If you're not a member, get an account, start a thread on the game (if none is available, but the policy there on thread creation is quite liberal). The Witcher forums are great and all, but I think they might be a bit too insular, too specific for your desire to spread the word on Sui Generis to be duly served.