I've been looking at data notifications and find real value in the idea.
It would be better if I could just schedule the dashboard to be sent whenever it a) returns data or b) returns data meeting a specified criterion rather than having to create another insight w/in the data notification.
An alternate would be to default opening the referenced tab in the data condition box.
There would obviously need to be some flexibility to choose an insight w/in a tab but it would be better and much more intuitive to base the condition on something already used for analysis instead of creating a new( and potentially complex condition*
* reproducing complex <nouns> manually is an invitation for errors and the ability to point to a single original source would be preferable.