An awful outcome for all involved, the loss of an innocent life and serious injury to another whilst well intentioned people were attempting to help another is a cruel irony.
As mentioned in an earlier post, it's a fair bet that the SAR/Helimed crew have not been sleeping too well since.
Fit for purpose comes to mind - surely seasoned helicopter operators, aero dynamicists and engineers should have a say when it comes to platform design, just because there's a bit of a gap doesn't mean it's a good place to thump a powerful helicopter down onto.
Ref. DaveR's post showing the "no landings after dark" notice, although not directly relevant to this horrible situation, it illustrates that warning notices are plastered all over everything now, so much so that people are either oblivious to them or simply can't be bothered to read them; they only serve as arse covering for the service providers/operators.
A number of years ago a study (can't quote the source) concluded that so many people were wearing hi-viz that the impact was lost.
I can't help but think we are in the same situation with warning signs and labels.
There should be nobody (some military excepted out of operational needs, although there is under normal circumstances familiarity training given), without aviation or aero engineering knowledge to be exposed to the risks presented by being close to a powered aircraft of any description while still in turning and burning mode.
Platform positioning and design seems to be the devil in this sad tale.