All of the things you mention are "wishlist" items right now.
Lets assume this is true (and honestly, I'd love for it to be true).
>It should be illegal for an officer to operate or be on duty with a broken or otherwise non-functioning body camera
So now that you have that law, how do you enforce it?
How does a department verify that they're complying?
How does any individual officer know whether his camera is working or malfunctioning?
How do they correct the problem if it's a technically complex issue related to camera infrastructure or hardware?
How much additional burden does this place on each department?
How do those departments pay for that added burden?
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So can we put a system in place that satisfies your very high standard? Almost certainly yes.
Should we? I don't know.
Will we? Almost certainly not. At least not in the immediate future. It's expensive and hard.