Provide a "Zoom To" function:

• Zoom To route: should show the entire route
• Zoom To (current or next) leg: accordingly
• Zoom To (approaching or selected) airport area (e.g. two miles around)
• Zoom To traffic pattern (i.e. "Platzrunde") of next/approaching/departure/arrival) airport
• Zoom To (current) ATC area or (current) airspace D-CTR/RMZ/TMZ
• other zoom levels might be interesting: Gafor, FIS, airspace in current cruising altitude ...