1) It's unconstitutional, as a violation of due process, to suspend officers without pay, before they have been adjudicated as having done something wrong.
2) It's probably unconstitutional to impose forfeiture of vested interests as punishment for a crime.
3) Premediated murder requires specific intent to kill. Even if the kid had died, it would most likely be negligent homicide.
4) Removing legal protections for police sounds lovely when you only consider situations like this one, but you forget that for every one instance of something like this, there are dozens of instances of actual bad guys filing meritless lawsuits.