Just wondering if commands could expire if they haven't been used in a really long time (2 years?) An expired command would still work, but if someone else wanted to claim the command for themselves, they could.
Another feature to ease the maintenance burden would be to capture the creators email address. If someone reports a command is not working (and this is verified somehow), then the creator is emailed to correct the command. If they fail to correct the command within a week, then the command expires and becomes available for redefinition.