I haven't switched back to the old interface (mainly because I'd like to see what everyone else sees when I visit the forum). But it remains unclear to me what functional advantages the new interface offers, and I haven't seen any explanation of the rationale behind some of the changes. Perhaps some of these issues have been addressed, but some have not:
- probably the biggest issue: it's now much more difficult to identify the most useful posts in a thread. Some of the indicators seem broken (the number of kudos a post has received is not even displaying). But the display has also been changed to make those indications nearly invisible. They used to be large and colourful. Now they're neither. I assume many people rely on these indicators to quickly pick out, from a long thread, which solutions to read. I don't understand what would motivate a graphic design change that makes those indicators harder to see;
- on main forum pages (listing all the threads in a subforum), some of the column widths were changed. It seems less space is now devoted, for example, to displaying the name of the most recent poster, which is useful information. It seems more screen real estate is dedicated to the update sidebar, on the right. I'm not sure if others use that, but I never have. I certainly don't want it to be bigger than before;
- I'm not sure if it only appears this way to me, or if it also does to others, but under my name, where my GMAT score is listed, I see it broken across three lines (one line each for the overall score, Q score, and V score). I don't know why that is; it wasn't like that before. This doesn't seem to be true for everyone though, which makes me wonder if I only see it that way because I'm logged in to my account (and for some reason I can't guess, that affects the display I see).