"What you reward is what you get.
Good standards are senior-safe because they remove negotiation. In a policy exception that will become precedent if granted, they make the bar legible and the exception path explicit.
In a policy exception that will become precedent if granted, the request will be framed as pragmatic. Without a clear exception rule, “pragmatic” becomes a loophole. Over time, the standard turns into a suggestion. Define the decision rights before the crisis, or the crisis will define them for you. Make the boundary explicit enough that a peer could disagree with it; if no one can disagree, no one can defend it under pressure.
James Q. Wilson is useful here because it forces precision. Re-state the standard as a yes/no check and make the exception path explicit and narrow. Make it falsifiable.