It would be helpful if there was a setting when setting up a Group that let me set a Category that should be watched for any User that is added to the group.
We are a non-profit using Discourse to manage volunteers groups (and replacing mailing lists). When a person volunteers to join a group it would be easier if the category dedicated to discussion for that group started automatically notifying her of new activity. She can un-watch it if she wants, of-course, but it gets her started easier in the group flow.