1) on the Main player view, Column browser, please include a "No rating"/"Unknown" selection (like you have under Music->Rating in the tree view). It makes sense that the two routes should include the same options...and it would assist people in trying to go through their collection to rate tracks or find new music.
2) I'd love to see an editable rating widget in the Mini Player. Currently you have to right click, go to properties, set your rating, then close the dialog box. That's a lot of clicking if you have hundreds of tracks to rate. And a little frustrating when you realize it's already been rated. Staying in the full screen view means you can't really do much else without a lot of app switching. I've tried to use the windows taskbar preview but sometimes it's hit and miss whether it shows, plus there's a lot of dawdling if you set your taskbar to auto-hide. I simple/direct click on something that's in view option would be awesome

I appreciate some of this (minimalism) is done to allow the player to be as small as possible. One app I've made has three views. Absolute minimum, slightly bigger with a few more functions, and full size. Perhaps something similar could be done?
Aside, the main view shows "track name - artist" on the play bar. I'd like to see this on the Mini player as well as I have a bad memory so I'm constantly having to go to the full screen view to remind myself which Artist is being played. This could be "optional" if it's a setting
3) Adding a zero indicator at the start of the current Rating widget would be really helpful. Clickable to apply this rating. Presently the only way to rate as a "zero" involves selecting the track in the full screen view and go through the right click menu to a submenu...and when the track next plays it just looks like it's never been rated. With a zero added to the indicator on the play bar it would be obvious...and quickly rectified by a quick click of the next track button

I hope these sound like worthwhile suggestions?
cheers
J