We have a conf-jira-crowd installation where Confluence is used with two different customer segments. We have two separate dashboard pages set up for those two groups, that if set from user's profile, lead directly after login to the right custom dashboard.
When creating new users, we would need a way to specify the users Site Dashboard (found from any user's general preferences) automatically, based on group. A new dropdown menu in group management would do.
As we are using Crowd this feature should also be working with users created there.