OK, I get it that HPD as a whole totally screwed this investigation up - for any number of reasons. The obvious one being to cover up for a police officer's family, but from my experience as a former detective this situation certainly wouldn't warrant that type of "kokua". But then again, I initially didn't believe the initial allegations against the Kealoha's. I do now though.
Certainly not an excuse for the lack of a proper investigation, but a continuing lack of accountability & leadership has long been the norm.  No matter who takes over as chief, they will still have a command staff of whom Kealoha has put in place.  They will continue to place blame elsewhere instead of leading & supplying proper training & direction.
The HPD investigators need manpower, they need to have latitude &/or support to run investigations driven by need, not a budget. They have caseloads that is next to impossible to manage properly without major cases being compromised. That is a management issue.