The first thing I noticed was that I couldn't access the breadcrumbs. At least it isn't that obvious to me if they are there. I see links on the left to what I assume are common forums but that doesn't really help. Being able to click on a breadcrumb to go back up one or two forums is something I find useful.
The breadcrumbs weren't added earlier and from what I remember was an oversight. Some progress has been made recently on the beta view and the when we push the next changes, they will have the breadcrumb like functionality.