Many thanks Dennis for these thoughts on design. And Craig, I know where you are coming from. The time I spend determining where exactly is North? And is the map scale 1:10,000, or nearer 1:11,000?
Landmarks are more pertinent when it comes to navigation. But they should be tailored to the destination I think. A Post Office may not be recognisable in Tajikistan (a current project), but a park/statue/roundabout will be.
I've also been working on projects in the Middle East recently. My client (Beirut based) tells me that most streets don't have names that a local would recognise. They navigate by landmarks, whether it be a bank, supermarket, pharmacy or whatever. Worth keeping in mind.