When a user on a flarum forum that has flarum/suspend is suspended by a moderator, they receive a notification. Usually, the notification would look like this ---> . The thing circled is the profile image of the moderator who suspended the user. What I am suggesting is that the pfp of the moderator that banned the user is hidden and not shown. This would prevent the user from arguing with the moderator after they have been unbanned or attempt to spread rumours about the mod.