For bulk import of contents, the FTP transfer is sufficient from my point of view. Creating XML files for every document to be imported is rather tedious. But it's a nice feature in some cases. In comparison with Sharepoint, the FTP option is much better.
For importing users, the CSV file is just fine.
For importing / exporting list it's too bad there is nothing available. It should be just like user import. There is a article explaining how to design a list and populate it but I don't see in the code anything to import CSV lists. Too bad.