The Forums of many sites generally are the main focus for the majority of the users.

There are a lot of missing features in newBB that need to be added in future releases. arinf has listed a good number of them. Other features:

-after submitting reply, be taken to your reply, not first post of thread
-click on thread, go to most recent post you haven't read instead of starting at first post of thread
-private forums need to be hidden from people who don't have access, and to not show up as locked to those with access
-Quote feature to go like... [quote="<user>"]The Quote[ /quote] and show up like "<user> wrote:{quote block}"

That's what I can think off the top of my head.

Other than that, it's a pretty good job with newBB so far, but it could definitely use a lot more attention.