Button to open the Playing Tracks/Upcoming Tracks window

[Mr.man1093]

Currently, the Playing Tracks/Upcoming Tracks panel is locked to the right sidebar. It would be nice to be able to open and close a separate window that contains this information through the use of a button or keybind similar to how iTunes works. This would free up a lot of space from the right sidebar, allowing for more track information to be displayed at once, or it would allow you to completely disable the right sidebar if you were previously using it to only display the playing tracks panel.

[Steven]

the right sidebar can be configured to auto-open ie. when you hover the mouse on the right side edge.
Also you can configure the status bar to show buttons that open/close the right sidebar (and left sidebar)

[hiccup]

Currently, the Playing Tracks/Upcoming Tracks panel is locked to the right sidebar.

It isn't.
You could e.g. also place it in the so-called 'right main panel', and have a keyboard shortcut and/or toolbar button to open/close it.