Is there a feature list and comparaison with other Drupal or non Drupal intranet

Did Acquia or any beta tester make  a product competition analysis with your main alternative. 

• In Drupal I would think "OpenAtrium" http://openatrium.com/
• In OpenSource "BuddyPress" http://buddypress.org/
• In MS " Share Point" http://sharepoint.microsoft.com/
• In Saas "jive" http://www.jivesoftware.com/  for business and http://ning.com for general public

If not we can try to do that together. 

Cross posted http://groups.drupal.org/node/53268#comment-267434