With v107, Hairstyle seems much more stable - previous versions seemed to cause media core crashes.
I have three initial comments on missing functionality:
1. In the Media Library I can't select with the keyboard specific media files to play. Same for playlists.
2. Noises activate even when moving the mouse cursor within a button - very annoying! This isn't an issue when using the keyboard, but I'd think the mouse would be used occasionally.
3. There are no indications (icons?) to show that buttons scroll up or down off the screen, and there's no indication (icon?) that there's a "back" button. The forward button is nice from a functional perspective (although aesthetically, the skin coudl use some work - I know, it's still early!)
And, in general, there is a noticable "slowness" when navigatiing... not always, but enough to be bothersome. It seems to have to think real hard sometimes.
Oh... and the Display Options acts strangly. If there is nothing playing now, it opens a black screen (just the background and PIP) - whcih can cause some confusion as there's no indication what's happening. And there's also a problem with the "Statistics". Doiubling-clicking opens the window, but pressing enter seems to cause the window to open and then quickly close again.
Overall, it's getting much better!