SARREMF - yes, the only known engine fail at SARTU on the 412 would have been a ditching if the QHI had used 20 degrees nose-down. As it was he used the Sea King technique and flew away despite being theoretically committed.
Shawn - yes, that would solve a lot of issues - what technology exists that isn't being used or is it just better designed and positioned pitot tubes we need?
At least it seems that disc loading and blade design don't seem to be factors, it is simply the case that a 'one-size-fits-all' technique for dealing with a single engine fail in the hover doesn't exist and, whilst guidance in the RFM/ODM is one thing, there is no substitute for experience and practise.