With the recent release of Drupal 7, the community should now focus on upgrading existing Drupal 6 modules to Drupal 7.
Having already upgraded the print module from 4.7 to Drupal 5, and from that to Drupal 6, I can tell you that this time the process will be both harder and easier.
I'm known, famously or infamously, for my code quality reviews and, whilst I don't get enough time to perform the same anal-retentive behavior at Trellon, I've streamlined checks of the most egregious errors with daily e-mailed reports using Coder and Drush. Drush allows you to operate your Drupal site from the command line, while Coder is a friendly "do it right, bub" for code quality. Read More >>>