cheers guys!
this is how it looks right now:
the layer turned off is a copy but with fresnel off and very low bump(~3) turned on using the same procedural base.
this is for tweaking reflection color and sharpness of the coating effect as in the 2nd image above.
it is turned off in the tests below;
it is not quite there yet, as i can't get the brick offset to be truly random when using very small brick size.. at some point there is visible repetition between the rows, even at 100 random only. in fact i got better results using normal offset.
under certain light it becomes more visible, and the angle map is revealing it the most.. so i somewhat removed the contrast there.
also if using revolved type UVs .. we get a visible seam edge we can't avoid, don't we?
