One could always lower one's seat to enhance upwards vision.
Reducing one's forward vision to enhance one's upward vision seems like a losing proposition to me, especially in a low-level formation environment. Separately, all modern aircraft have a "design eye point". Moving the eyepoint around is generally not a good idea. Expecting the pilots to move that eyepoint around to solve a deficiency in the windows is just plain bad design. I refuse to believe Airbus would do that.