JimL - at the risk of sounding too cynical, it seems there may be a risk of intellectualising this problem and ending up with another 10,000 word diatribe within which may be hidden a couple of nuggets of useful facts and advice.
Rather than approaching this from a perspective that there is a safety problem that needs addressing, the CAA seems happy to take the opportunity of hijacking some research done by someone with a completely different agenda and using it in another study which may not be applicable to present ops.
Is the answer really going to be more manoeuvering at low level, at night or in poor weather whilst trying to land - hardly seems like progress?