Id like to see this module be able to post when a user signs up for a Signup enabled event to that user's FaceBook wall.

...a message as simple as, "user name signed up for Drupal event name" - with the 'Drupal event name' being a link to my Drupal's event node.

I suppose you would need a checkbox (default checked) that would warn the user that their signup was about to be posted to their FB wall...give them the option to uncheck it.

Optionally it'd be nice to associate a Facebook event, Page and Group with a Signup enabled event on your Drupal site and any new Signups get pushed to those Wall's