One of the most important things I've learned over the years I've managed people is that processes and policies of any sort are two-edged swords. It's easy to add a policy, and to convince oneself of the advantage the policy will confer. What is very often ignored is the cost of a policy.
Every policy comes with an associated cost, and those costs can add up quickly. People always ask "what will this policy make better", but, just as important, is to ask, "what will this policy make worse".