Raising police standards and tackling misconduct

This seems to be a particularly bold and radical approach to addressing two separate problems. The Stevens Report makes a very strong recommendation that this new ISPC should be entirely independent of the police service. This seems to me to be absolutely right in terms of the investigation of serious complaints. However, although the inspection function would benefit from a broader perspective, surely the intimate knowledge of police officers is absolutely key to make inspections a helpful and constructive exercise, rather than just a bureaucratic requirement?