1. it the track information popup (when the systray icon is clicked) it would be nice to have some controls like in track change popup, to skip the track or to pause it, so that it won't be necessary to restore musicbee to change the track.
2. i like the new now playing artist infomation panel, but the picture in the last.fm tab isn't placed very well, especially if the text is scrollable. the picture's position should be fixed when the text is scrolled. also, the picture shouldn't overlap with the artist.
2'. (later edit) we should be able to hide the artist information panel somehow.
3. lyrics could panel could have an option to open in a new tab (with possibility to increase text size) - for karaoke purposes
4. a darker theme (like purple rain of songbird)