I'm disappointed that all of the great features are still Pro Tools HD only. While I do use HD on a normal basis in studios it seems incompetent for Avid to continue to stifle the software instead of unifying it. In the none HD version, there is still no elegant solution for disabling input monitoring, most of my plug-ins aren't yet compatible, limited metering choices, very humble bouncing options and so forth. I don't want to rant because there's a lot that I do like about the software. However, essentially, I'm still having to use some combination of Pro Tools 10 and other software, to get full effect. Outside of Pro Tools now being 64-bit, I was more impressed by the Live 9 and Logic X updates, to be honest.
I will revisit my opinion once everyone is ready with 64-bit AAX and I've had more time to spend with the 11 software in true form. From what I'm able to see though, it's far more optimized though. It's snappy and more responsive on my system.