There’s no really good place to say stuff like this, but I just wanted to mention, the new visibility options are awesome. It probably wouldnt be as helpful to people using unified skins, but if you work like I do and use the retopo tools to construct deliberate geometry with logical loops, the Grow, Shrink, and Outer Ring functions have all greatly speed up the rate at which I can assign and crease poly groups.
Also, while I havent found a way to use the Paint>Group Loops process to deliberate effect yet, the Auto Masking> Mask by Polygroups function is so helpful, it’s taken up a permanent spot on my main interface now.