I like the new interface but for some reason it kept detecting my status as 'Offline' a lot...had to restart Steam to fix it...looks like they still have a few bugs to work out
I like the new interface with one exception is that there is no "mini games list". I like to use that and leave it on the far right side of my extended desktop display.
Far too many bugs in it yet. It wasn't bad as far as layout and design, but the number of bugs and flaws were overwhelming. I opted out after about three days.
I like it except you can't change the download region with the beta, I had to switch back to the old one to get a server to download BC2 off of. In the beta settings there is no 'downloads' tab. I will probably switch back after BC2 is done DLing.