@ whump:
Yes, I hope to finish quite soon with contours!
I would like to use contours to make a tessellated DTM (Digital Terrain Model), and surely I'll have to drop the less important ones to make the map easier to be read.
Plans for presentations, you say? Since the USN country hasn't any element of fantasy or sci-fi, I'll use a modern contemporary style: a sort of technical map you could find hung on any public place wall.