One level of coating (..) seems to be approximately equivalent to the Mk.1 panel, and the other is more effective (but affects appearance of the display to a greater extent).

Don't be too careful with the coatings. I have the red display now, and while it is nicely bright it also shows the components very clearly. As a result, the 'real' size of the display is very prominent and, as a result, the graphics no longer float in the (much larger) oval space of the front, but are confined to the original rectangular space of the display. I really liked funnel-web seemingly filling up the entire front area.

When deciding on transparency, try to make it just dark enough to hide the unlit parts of the display

Also, any chance you can give two shine components a dark colour? The little gizmo that houses the IR eye (on the right) and the the 8 or so shiny triangles that run down the left hand side of the display (power lines?)

Henno
mk2 nr 6