Not sure if this can be done already, but:
- Scheduled Events, a checkbox to enable/disable the event? Such that you don't have to delete or mess about with the rule to disable it for the time being?
- Structure view, maybe a strikethrough on an object if it's Network disabled. That way at a glance (with everything expanded), you can see straight away if it's been [accidentally for instance] disabled
- also I noticed on latest version of Cortex, mobile web browser, you see "NaN" in text shown before the page is rendered?

Not sure if anyone has any others to add to above?