I'd be concerned if I were a UK operator going to helidecks about this. (all of my following comments are based on not having read the document, so take them with a large grain of salt)
While it is useful in an academic sense, what possible use is it going to be in an operational sense?
How are we going to measure turbulence and then quantify it? If we can quantify it, can we then predict it in a manner that would be useful to the operator - it's a bit too late to have the turbulence reported to the pilot on short final where the decision might be 'Do I continue with the prospect that if anything happens I could be blamed for continuing in the knowledge of the turbulence level when my considerable experience tells me that this is OK?'