BF109 - Can't we just have the gunsight in the middle?

I doubt any pilot closed his eye in combat. Deprives you of 3d view and distance estimation. Just give us a button that has to be pushed throughout aiming that moves the head automatically to the right position while keeping head shake and g effects. Bingo. The current way is not more realistic as viewing hardware is not simulating real movement well and making it unrealistically difficult to aim with the 109 compared to other planes.