Alt-tabbing to the Places panel frequently is cumbersome (need to press Alt+Tab multiple times) and unpredictable (depending on the number of elements opened the number of needed Alt+Tab presses changes). Moreover there is no configurable shortcut for focusing on the Places panel. I suggest to move focus automatically to the Places panel after pressing F9 (default shortcut for hiding and showing it) just like it's done for Ctrl+F for searching or Ctrl+I for for filtering, where the focus moves automatically to the search filed and filter field respectively.