Although feedback is a good idea in theory, in practice it can't work on forums since the admin don't want to be liable for what's been said. Also, forum admins are open to be biased, often brushing things under the carpet. That's not a dig at just this place, but forums in general. For example, I know of numerous traders who have done some scary and downright dangerous work, but I get lynched for even having a problem with cars being dangerous. I won't get into it on here, wasted too much time doing that in the past, and somehow I end up being in the wrong for having a problem with particular specialists who really should have known better.
Like I say, it unfortunately doesn't work, though in an ideal world it should. It really needs to so that others don't give their hard earned to make their cars into deathtraps, but it's near impossible on public forums for the reasons above and most of the other posts made in this thread too.
Don't worry, this is all I'll say on it, since I know it'll just happen again if I keep talking about it.