A few sublemmys I moderate have accumulated some inactive moderators.

They weren’t bad mods, and I’d happily welcome them back if they become active again, but several accounts have had zero activity for several months. This gives the impression that the sub is better staffed than it is, and I wouldn’t want users reporting a problem to a dormant account.

Should inactive moderators be removed? If so, is there a standard etiquette of messaging them every x days for y weeks before removing them?

Some moderators have lower seniority than my account, but a few have higher seniority, often the original creator of a sublemmy during the Reddit blackout last June. How should these cases be handled?