I don't know how possible it is, but it would be great if there were a setting to change the edge blur of the shadows (not to be confused with shadow quality) so that the pixelized shadows don't flicker as much as the sun moves.

Left: Native miniature shader pixel shadows
Right: Un-pixelized shadows > gaussian blurred > Pixelized (in photoshop)

(also, while you're at it, I always add a sun angle setting whenever there's an update)

If you did this, it would make this the perfect shader.