The root problem here is not a remind interval, but "email alerts". Either something should file a bug to look at "some time later", or it should start ringing

The root problem here is not a remind interval, but "email alerts". Either something should file a bug to look at "some time later", or it should start ringing your phone. Email alerts are just spam. For both bugs and pages the reminder is good. A bug should get an update essentially saying "yes, this is still looking bad" (not create a new bug), and if it was important enough to page you the first time, then (unless you silenced the alert) it's important enough to remind you by ringing your phone again.