I’m still dissapointed with some aspects of bbPress 2 basic functionality. First of all, you must make the new topics / topics with new replies a different color (at least) so users would know instantly where there are some unread messages. Introducing a system of icons for the topics would also be a good idea. It all exists in the standalone bbPress, and as long as ppPress 2 doesn’t have it, I’ll keep the ppPress 2 forum as experimental and use 1.1 as the official forum for my site users.
You’re right, but most forum platforms do. So since it’s regarded by most as basic forum functionality, I think it should become a feature of future releases. In the meantime, a third party plugin solving this issue would be just fine.