I have some suggestions that I think will improve the bitcointalk forum.

(1) Notification
          - Something like the notification bar in Facebook. Wherein you can get the numbers whether some users replied to your posts or if someone quoted your replies. It will make it easier to look for the new replies. Only, if that is possible to be applied in this forum.

(2) Bitcoin Value Bar
          - The current value of bitcoin. It can be placed at the bottom of the date, or at the center of the heading. It is much better to have other coins as well, such as Ethereum and Litecoin.

(3) Friends List
          - In my opinion, it is necessary in this forum. As for myself, I joined this forum because of my friends. And it would help if we have some friends list to quickly show the people you have added.

These are just some of the ideas/suggestions that I think will improve the forum. It does not mean that it will truly benefit the forum. But just in my own perspective.