Not to mention those "extra-terrestrial" lands beyond the ice wall. Wonder if the entire Earth will be shown on maps. People will just want to buy real estate there, could be problematic for a century or so.

I'm still unsure about that model of earth
I would be delighted if it was true though
I always was the explorer kind.

I could wear a fancy hat with a huge plume
Wear trusty leather boots with grand floppy-flaps
And draw maps while having a fidel scribe following my footsteps
Writting how great I am!

We put a "Basis of Bearings" on our maps so they can compared with others through time. It's rare to see a contemporary map drawn on magnetic bearings. Even the old-timers in the late 1800's determined north by observing heavenly objects such as the sun and polaris.

I was making a joke.
Now it's explained
And non-funnied.