IMO the system is fine. Check this image:
Under the title you see the name of the OP. If you click the title (2), you are redirected to his / her original post i.e. the first post of the thread. If you click the small yellow sign (1) in beginning of the title, you are redirected to first unread post assuming you have already visited this thread, or to the first post if the thread is new to you. Clicking the last poster (3) brings you to the last post of the thread.
I can not see how there could be more information?