That may be seen as insisting, because yes it is, please bring back the "collapse forum" (and memorize it forever) functionality, because there is just too much forums and sub forums to check when only a few are interesting for me (same for everyone, pretty sure some people come here for Red Orchestra / Rising Storm ONLY, other for The Ball, others for Killing Flor 1/2 ONLY, and so on). I know a few people who talked about that the first time they came back on the new forum, sure lot of others feel the same.
With all the forums visible now I personally don't spend any more time checking every little icons in this icon fest on the main page. I just ignore everything and only check one subforum from the top of the page (and this thread, located at the other extremity of the main page).
+1 for the dev icon when a dev has posted in the thread that was nice.
//edit: also, the blue icons are not really different in colors, and that makes it not so easy to see which sub forum has new post and which doesn't. OK it's actually different, but I mean this is the kind of detail which needs to pop in your eyes without you to look for it, I spend lot of time on lot of different forums and current icons do not work well for me. Maybe make new posts icons in a different color (like yellow, orange or red for new posts, grey for no new post)?