Would be nice to see a date of when a thread/post was last commented on in the feeds. Perhaps a clickable date so that it takes you straight to that most recent comment.
My thought is that it's difficult to see who has commented in a post recently, and then I click on something I think is new only to find out it was 3-4 months ago... and I'm talking about the Peerboard Community. So if it's like that here, I can only imagine what everyone else's board will be like.