I think there should be a rule regarding the activity of admins and mods.
For example, they can't just disappear for several months, and make short 1 week appearances, unless provided with an appropriate excuse. If leaving for a long amount of time (eg. a year and a half), a proper reason should be submitted and reviewed by Cleric. If Cleric approves of this, then there should be no consequences. I realize that there are several inactive admins on the wiki already. What happens with them is up to Cleric. For future reference however, I propose this.