In my headcanon, I always explained the ability to draw maps and waypoints away as an intrinsic ability to the Seraph's memory. With that being said... I started a Wilderness Survival world without coordinates and the map and I must prefix this by saying I really enjoy it, since it incentivises me to use landmarks (and build my own, i.e pillars and roads). But the ability to create maps with waypoints, be it with parchment or paper (or the near perfect memory of a Seraph), is really useful as every familiar with the game will tell you.