There can and should be some rework in terms of how the forum works.

But, I will say this much: I like the forum as a traditional forum with loading being static and every post is seen (unless you block a user). I don't want Reddit style where people can make other people's posts be hidden or where the website itself chooses to hide posts and you have to "dig in" to see every posts.

Also, back to forum, what I do not want to see is what Blizzard has chosen to do with the WoW forum. Please, please, please do not go in that direction (at least, not all the way*).

I like having clear distinctions between threads with new posts and threads without new posts and having to reload the page to refresh.
I like not having to deal with trust system to be able to post image.
I like not being notified constantly with new posts/replies and being able to choose when I want to see new posts.

* A couple of things I do like about the WoW forum:
Being able to quote right from someone's post and seeing a live preview of your post.
In terms of notification, I think it'd be a good thing to receive a notification if someone edits their post to add a quotation from you. With the current forum, unless I'm mistaken, I think that won't register as a new post, so the edit might be missed.