I'm not sure if the library was designed to be used the way i'm thinking:
What i would like to see is the ability to have more then one Music Library heading in the left column, so the top level could be called "Library - MusicBee" and under that - where "Music Library" is now, have the option to add several libraries.
For example in my case i would have a library called "Lossless - Single Artist" and "Lossy - Single Artist" and maybe even another for "Various Artists" for compilations. Further to this you could set the view modes differently for each library - so single artist libraries could have a default view of Genre / Artist / Album and VA library could be Genre / Album.
I know this kind of already exists but functionality could be improved with a library management screen where you could add delete libraries too (only way i know of now is to physically delete the library management files to remove said library)
It would also be nice to see the ability to send a singe song or album to an existing playlist, for example from the context menu click on a song (either in the library or the active playlist) and go List > Add item(s) to existing playlist > *existing playlist names*, and maybe even the option to assign a hot key to this action.
I would like to be able to minimize the player from Mini Player and Main Player view modes - while still keeping a dedicated button to let you switch between Main and Mini Player views, maybe be able to minimize the player from the context menu (right click > minimize to tray)
Just some humble opinions, my apologies if these already exist - thanks for all your hard time and work on MusicBee!
-Peter