I've been thinking about an additional Campaign Trait that would be available to my players for a 1e running of Kingmaker.
You have just finished your apprenticeship with a master cartographer in a large town or city near where you grew up.
Benefit You gain a +1 trait bonus on Knowledge (geography) checks, and Craft (map). One is always a class skill for you.
Benefit You gain a +1 trait bonus on Knowledge (geography) checks, and Craft (map). In addition you begin the campaign with basic map making tools (two ink pens, six ink pots of various colors, a dozen sheets of paper, a scroll case and a compass).
My experience is people tend to take combat-based traits when possible. If you hint at some benefits (e.g. a buyer might offer pre-adventure to purchase accurate maps contingent on their accuracy), or if they're story-based, all fine otherwise.
Mapping should be a big deal. The PCs don't have aerial photography and satellites.