When new users authenticate in the Developer portal they are automatically added to the system group - Developers. But for product visibility purposes, we have additional user defined groups: Internal and External (I'm sure there are other use cases, that's just ours). We move those users who authenticate by AD into the Internal group and those who don't into External. This is a manual process. If we could add an 'AD like' rule to the Developers group memberships on add that automatically (based on authentication method and(or) other criteria) add the new users to a custom group then we wouldn't need to manage this manually.