Most of this is common sense data privacy. The problem for Facebook is that users aren't the customers, they're the product, so all these actions essentially increase their supplier cost with no appreciable gain for FB.
What about making them delete user profile data after they unregister and not just hide it?
One of the listed changes is "Work with the DPC to identify an acceptable retention period of data from inactive or deactivated accounts". Another is "Continue devoting engineering resources towards improving the system that irrevocably deletes user accounts and data within 40 days of receipt of a deletion request".
Both of these have due dates of July 2012.
I believe the EU is planning on updating the Data Protection laws, including giving people the right to actually delete their data.