3D brush pointer for sculpt/texture paint/weight paint/vertex paint modes

Having a 3D pointer for these modes would be of great help, especially in the sculpt mode. It would allow the user to better see the direction the geometry would follow when using brushes like push/pull and snake. In paint modes, it would also help to see a brush rotate to have a better idea of how a texture distorts as it's being rotated in 3d space.