In theory you are supposed to sit on the front third of your chair, but no one does because there isn't enough room. Also, you are supposed to align the back legs of your chair when your class sits down (class team specific, my class didn't) which makes sitting on the front third impossible most of the time.
Really though, OCS still sucks despite the changes. I was in Newport long enough to see the change myself, and other folks in student pool/med hold told me about the changes they saw before I even got there. I really wouldn't mind if they gave New Nimitz to the other OTCN programs and put the regiment in King Hall. That would actually make for a better training environment than the new building. And I don't mean from a luxury/difficulty standpoint, but because New Nimitz is barely big enough to support four OCS classes at a time (if they ever wanted to make OCS bigger, that building could be a bottleneck), and doesn't have the layout of King/old Nimitz that lets each company have its own isolated p-way. Even King has other rooms that could be used for many of the functions of the old 2/3rd deck NAPS classrooms that New Nimitz lacks.