Anti-aliasing Change Proposal:

Constructors remove:
public Scene(Parent root, double width, double height, boolean depthBuffer, boolean antiAliasing)
public SubScene(Parent root, double width, double height, boolean depthBuffer, boolean antiAliasing)

Constructor add:
public Scene(Parent root, double width, double height, boolean depthBuffer, SceneAntiAliasing antiAliasing)
public SubScene(Parent root, double width, double height, boolean depthBuffer, SceneAntiAliasing antiAliasing)

Note:The antiAliasing argument is used if the underlying graphics driver has anti-aliasing support.

Where SceneAntiAliasing is an enum with the following entries at the moment:

public enum SceneAntiAliasing {
    DISABLED, // disables anti-aliasing
    BALANCED, // enables anti-aliasing using optimal system setting available that balances speed and quality
    FASTEST, // enables anti-aliasing using minimum system setting available that results in better frame rate
    NICEST // enables anti-aliasing using maximum system setting available that results in best visual quality
}