Making Drupal sites certainly requires lots of know-how, trial and error, some research and lots of tea! While creating the new version of Raven Developers on Drupal 7 it was evident that a lot had changed in API, theming and overall interface since Drupal 6. Improvements to front and back-office with use of overlay Seven admin was a big relief. Believe more is on the way lets wait and see for next major release of Drupal 8.