When alerting on a Node, under trigger condition, I would like the option added to limit the scope of an alert to only members and sub-members of a group.
Try setting the alert type ('I want to alert on:') to 'Group' to expose those variables.
I know its not 100% what you want, but it will get you going.
What kind of alert are you trying to make? I would highly recommend custom properties for classification if possible. I only use groups for condition roll-ups and down stream suppression (switch/server behind this router will not alert if parent router is down).
