Thanks Alan for your comments.

This is actually our 4th map and getting the overlay right for everyone is a hard thing to do, so people like bright and some like barely visable, so its hard to find the middle road. Although it looks like the Dundjinni style, its actually a rendered image from a 3d model.
I sort of added the logo as a last minute thing as we needed to get the message out that we had gone solo, its not that way on our other map, no grid overflow either.

We are trying to keep the prices down so the pdf layer thing is not something we are considering atm.