I'm a bit peeved about the inability to mark specific forums as read as well. For example, all I had to do previously was double click the icons for Off Topic and Campfire Stories and I could use the New Posts feature to read every new post without seeing results from those two forum sections. Now it looks like I'll have to sift through the entire New Posts list and then mark the remaining threads from those sections as read after I've viewed all the ones I care about. Not exactly a deal breaker, but a downgrade to be sure.
this forum will take some time to get used to...
I am not a fan of the way this works - mark all or nothing as read. I prefer how it was before, where you could, for example, mark Saloon as read, but leave Questions & Guides as unread.
another forum related question - what happened to reputation? I see a "like" button, but no "dislike". and I see "Likes you've received" but not the "dislikes" a.k.a red rep. Is that gone now?
This is the other major issue I have with the new design. It seems like each positive rep message we've ever received has been translated into one like rather than the multiple reputation points that they may have been worth previously. My 2600 odd rep points are apparently the equivalent of 757 "likes", for example.
But I couldn't really care less about that part (apart from the damage done to my ego by Elmyr moving back ahead of me, but I'd say that's well deserved). There are two main reasons I don't like this particular change. Firstly, I always had a specific reason for sending somebody reputation points, and I liked to let them know what that reason was via the message that was included with the rep. Simply liking their post seems a lot less meaningful. Secondly, no longer having the ability to provide negative feedback means we'll probably see a whole lot more off topic/spammy posts in public with the snarky comments that people usually reserved for the reputation system. It's also a bit too Facebook-esque for my liking.
The only other thing off the top of my head that's bothering me is that I can see how many "trophy points" I have but can't actually view what they were awarded for. The reason for this is that it was decided to disable the trophy system on .net and I don't mind that decision, but my curiosity is killing me
Anyway, the rest of the changes just seem like mostly visual ones that I'll probably be able to adapt to over time, although I didn't really see a reason to move away from the old forum style which I didn't see anyone complaining about. I'm sure it'll be just like Version 2.0 and in a few weeks I'll not only forget my misgivings but won't even remember what the old layout looked like.
EDIT: Just found another pet peeve... That damn emoticon I've just used. Give us back our cowboy hats!