I was originally going to disagree with this suggestion, but then I asked myself why do we have the ability to fire someone as soon as they become warden? Like damn they haven't even given any orders yet, there should atleast be like a 30 second fire cooldown when someone becomes warden so they can try to be warden. I think having a cooldown would also dissuade people from doing a fire day, as they usually happen when someone gets fired then some idiot yells on the mic "fire day". Since jb players can't think for themselves this often results in every warden getting fired if 1 or 2 people are screaming fire him on the mic.
If there is a cooldown wardens can give orders first, then people would be less likely to spam !fire unless they actually are a terrible warden.