Display labels in notification email

We would like to be able to reference a host label's value using the $someHostLabelKeyHere$ substitution approach similar to how we are able to reference $someHostTagKeyHere$ in the body of an email.

In essence, augment the testing checkbox "Complete Variable List" in a Notification Rule to also include a host's labels.

We use labels extensively by leveraging pertinent information about our hosts stored in our CMDB and in turn adding that information as CMK host labels by way of the rest-api.

It would be wonderful to then be able to reference these values in a Notification in order to make the Notification more actionable by the recipient.