So true. We need reform of how abuses by law enforcement are handled. Many things could be done besides and in addition to relaxing qualified immunity. For example: send all cases to the States' Attorneys General rather than to the local district attorneys -- district attorneys have to work closely with police, so they have social barriers to effectively policing the police. Another thing is that being placed on desk duty or off duty with pay is abusive when it turns out the behavior was a fireable offense or criminal, so the officer should have to pay back that pay or simply not get it to begin with. Another thing is that police need to be trained in stepping in to their partner's business and halt brutality (preferably before it crosses the line) -- again, there are social problems here -the blue wall- that make this difficult, so maybe, too, change partners often.
Also, normally, when someone gets charged with a crime, the Speedy Trial clock begins running immediately (or at arraignment), so it's unwise to charge persons before the State is ready to try the case, and filing charges only to later drop them due to being baseless in retrospect is problematic, but perhaps for LEO there could be a notice of intent to charge whose purpose is to signal to the public that the State intends to charge the LEO if they can find enough evidence to go to trial with.
We need to get serious about dealing with police brutality and the system's inability to deal with it effectively. Preferably we should not overshoot and render the police vulnerable, but I think we can avoid that problem.