good thinking
take the wind tunnel out of it. A 200 mph plane does not fly in 200 mph air. Air has mass and inertia. When air is blown through a wind tunnel, the effects on airfoils are different than in a real situation. For all practical purposes, air is still with very little inertia. What really happens with sweep is theory. It has so far been too expensive to find out what really is going on. The books are full of theory. Go explore and find out what you can do. If you believe the books, then nothing can be improved. But we know it all can be improved. Keep on thinking, but make some real tests too and not in a wind tunnel, but with real aircraft.