Not so, if I understand you correctly. Do you mean threads with new posts by "unread messages"? ...and forum topic listing by "folder"? No time & date detective work is necessary. The folder icon in the left-hand column is your guide; yellow, or white.

Maybe I'm missing something here. But I don't miss the red numbers on the Forum topic list pages, probably because I never noticed them before. It's enough for me to see the numbers on the main page, and then to use the folder icon color to identify threads with posts since my last visit. I don't need to know how many, since it will open with the first post since my last visit as the topmost post on my screen. If I was really interested in the number, I could count them.