These new forums currently just use the default Forum module within Drupal. I plan to enhance these forums over time to bring in more of the features we had in the old phpBB2 forums, along with other new features. So for now, you don't need to post anything like "what happened to xxx feature". Just be patient and the forum should improve over time.
However, if you actually find a real bug or problem with this new site, feel free to post about it here.
Thanks for your patience.