That's a great looking map. The whole thing is beautifully rendered, and your use of color really works where most other full color presentations I've seen feel over-colored. I'll definitely have to try that three-dimensional style myself at some point.
My one suggestions would be to lay in a few more grid lines in the background, specifically set on the increment of your scale meter. Since - in a projection like this - the scale meter is only correct at the latitude where it's shown, doing the grid with matching spacing would make it much easier to read the scale correctly elsewhere on the map.