Hello,
Often when making updates to a list I want to see the Gantt view as well as the spreadsheet or Kanban view so it would be great to be able to open multiple windows with a different view.
I could see that this might be an issue from a development perspective with the way lists are currently saved in each view but really lists should be auto saved. Having to manually save just gets in the way IMHO. I cannot think of one reason to not save a list automatically after making updates as long as there is undo.