It really doesn't have to be a big debate. If no one can post even a couple internet threads about a particular problem, then there isn't a trend.
My little list was just off the top of my head - I'm sure much of it will be shot down. But I do think some models will make it through with so little to no posted evidence of QC problems. And even if you have to read the whole thread to see which guns those are, it will still be very useful information.
So please do shoot down the anything and everything! Just try to post a few links if the problems aren't widely known.