I'll bet that a small blur on some of the sharper elements would soften them and help them to blend into the rest of the map. 3 pixels or so, I should think.

The scale bar does seem to clash with the style of the rest of the map. You can explode it and modify the pieces. Changing the fonts and colors would help a great deal. That's what I did with this map: http://www.cartographersguild.com/showthread.php?t=1143

I really like these maps, and I'm glad to see a style that doesn't look just like every other CC map. I'd also like to applaud your very subtle yet effective use of the glow on the text.