I, frankly, do not entirely understand the hue and cry for an "inquiry". Having said that, there have been a couple involving police in BC that have seemingly been successful. However, in general, they seem to be unwieldy, expensive monoliths that attract a never-ending stream of lay-people intent on repeating ad nauseam their subjective experience of being victimized while producing no clear way forward.
In this case, there is a contingent of Nova Scotians utterly committed to the beliefs that the police and the government are profoundly corrupt as evidenced in social media groups, and even in some MSM, such as MacLean's Mag. It is not difficult to imagine that an inquiry in this situation would be overwhelmed by dozens of individuals intent on discussing their beliefs and various "proofs" of that alleged corruption. It is obvious that any outcome that does not reach that conclusion will not be accepted, and will be met with further claims of corruption. The primary reason for demanding an inquiry appears to be to put people, especially police officers, under oath in the believe such an oath will induce someone who is corrupt to cop (no pun intended) to the truth. It seems likely, also, that such an inquiry would attract a good deal of pro and anti-gun lobbyists demanding an audience.
Clearly, there were mistakes, serious mistakes - mistakes that very likely resulted in people losing their lives. It seems highly unlikely that the panel review will not uncover at least some of those mistakes and failings, and that a panel will make related findings and recommendations. Equally likely, those findings will point to short-comings in the RCMP - training, equipment, staffing, decision-making, reporting, experience, supervision, etc., whatever. That, and gun violence, in general, and questions about whether it is possible to identify and flag individuals with this killers potential in advance and what can be done, if anything, to prevent such a psychotic break, would seem to be more appropriate subject matter for full blown inquiries.
I have always been pro police, pro RCMP and proud to live in a safe, sane country and province. But 22 people were brutally murdered, at least 2 dogs were killed and 2 others were shot, 3 other people including spouse were injured. This stinks. What stinks most is the fact that they never stopped it at Portapique. They never looked further, even after being told by a living bystander, that a vehicle had left Portapique across a field. Every person who died AFTER Portapique, may have been saved if timely and accurate information had been sent from the RCMP to us, the province, with one single important phone notice. Not via twitter.