It has been pointed out before. Forget about the small idiotic details.The big picture is that there should be APPROVED IFR APPROACHES to these few places in Ireland.
The authorities and companies incompetence killed this crew.
Sometimes it's the 'small idiotic details' that add up to create the big incident. It's overly simplistic to cast blame purely at the authorities and the company. I'm sure that issues will be found in areas across the board in this one.
If you view it as a systemic failure whereby the system incorporates all elements (including the crew) then that might help. It's all too tempting in such circumstances to look to blame an individual/individuals or organisation. It's rarely that simple.
One of the principles of SAR is that crews (unlike in commercial air transport) do not need to rely on 'approved IFR approaches' to get where they need to be going. This however relies on adequate training and sensible regulation/operating procedures. I feel that these areas will be of most interest to the investigators.