Sometimes you have trigger campaigns that haven't fired for 6 months, but you don't want them to be inactivated by the automatic idle trigger campaign cleanup. A good example is if you have an older asset on your site and a campaign attached to that. Perhaps it doesn't get downloaded often, but you still want to track those downloads and wouldn't want the campaign to be deactivated.
It'd be great if there was a way you could check a flag to indicate that you do not want a specific campaign to be included in the idle trigger campaign cleanup.