"Overall" Rule Notification Contact / Rule-level overrides

It would be awesome if you would add a “default” contact list for success/failure notifications from Rules and other sources, which is set in one place and applies to any active rules/etc without specific contacts otherwise listed in the Schedule config.

This would allow admins to set/alter the notification email addresses for all rules at once, as well as provide the flexibility to “override” the default using the existing config in the Schedule step.