HeathrowDictator, I think that the Bristol situation was rather different. If I recall correctly, the problem there occurred during runway resurfacing and resulted from oil leeching from the new tarmac creating a very slippery surface when it was wet. This was exacerbated (for parts of the runway, at least) because the new tarmac had not been grooved to enable the water to run off as quickly as possible - this, no doubt, would also have added some degree of friction to the surface. On the face of it, the Bristol situation appears to have been an almost total failure of safety management for a problem that, perhaps, could have been foreseen and certainly had been identified soon after the first incident. I don't recall the way that CFME was used but I don't think it was designed for this situation.
And whilst I have huge respect for many of the AAIB Inspectors, they don't always get it right. This is particularly true when a recommendation is made about ATC or other ground operations; understandable when you consider that their staff are drawn primarily from aircraft operations and engineering specialisations.
But they have come up with some blinders! The one which immediately comes to mind resulted in the 'absolute minima' procedure in the UK - another blanket procedure introduced because one crew broke the rules. It may well be that such blanket procedures are good safety nets but maybe they are being used to mitigate poor training or adherence to existing procedures and so on.
It's a bit like saying that IRVR information should not be passed to pilots because the information might not truly reflect the conditions on the runway. I can quite see that someone looking at where transmissometers are located and variations in atmospheric conditions might believe that the information could be misleading. Is it really better to withhold potentially valuable information that to ensure that it is used in an informed manner? Things in our business are rarely black and white, but we seem to be moving toward a regulatory environment where we will have a rule for every eventuality...and if we can't find a rule to be followed we put our heads in the sand (and that's not intended to relate to your location!).