This fosters the belief among police officers that they ARE the law in a general sense rather than upholders of specific laws passed by parliament, they think they are in charge and you must do what they say or you are comitting an offence, and no explanation is needed.
in a case i was involved in i have heard police officers say 'people usually do what i tell them to do, they don't need a reason' – this kind of attitude makes anyone on the receiving end lose all respect for the police as a public service
– a tightening of the definition of 'obstruction' and an explicit recognition in the statute that simply not doing what an officer tell you to do is insufficient.
– an reminder to police officers that people can do whatever they want to do unless it breaches specific laws, and it is in fact a duty of police to facilitate everything
– an explicit duty on police officers to explain what offence someone could be arrested on suspicion of if they threaten or suggest that someone could be arrested