Bump. To sum it up: Unused Clan deletion should be able to be player-triggered two ways.
1. (First post): If you made a clan, and there are no former/current members (except yourself), you should have the option to delete it.
2. If a player would like a clan name/tag that is taken by one of these clans, they could request it, setting in motion an expiration date and an email to the owner.