We are working hard on it. However, since my part in the whole thing is creating new assets for just a bit of it I can't really throw much light on anything else.

Not unless you wanted to separate each of them out into an image per district and trace them that way. When you get to that amount of work it could be faster just to import the image and draw the districts by hand.

Going back to the tracing job on the outline...

The result seems a little pixelated to my eye compared with the original. This can happen if the image being traced is too low in resolution or if the edge between the opaque parts and the transparent parts are not well defined. If you want to improve on that result see if you can make the image both larger (more pixels in a bitmap editor) and more sharply defined.

@JimP - No worries :) I guessed as much.

That looks better now, Jim :)

I think the hills would probably benefit from having less shadow.