Did you know you can change what's displayed when you launch Management Reporter?
Under Tools | Options is the ability to change what's shown at start up.
Show Welcome page
Load last loaded report
Show open window
Show empty environment
Also, did you know you can hide the navigation pane to give yourself more room to work?
By going to View | Navigation pane (or if you like to use keyboard shortcuts Alt+F1), you can choose to either have it on or off.
You get to choose what's best for you and what will make it easier for you to get your job done in Management Reporter.