Slitherine

When I start a new game and set the map to its' largest size, which I believe is Maximal, I end up exploring the entire map in a matter to 15-20 turns. And, the remaining map still in the fog of war is water. The eastern border of the map is about 2-5 tiles away from the western border, going across the water. How can this be called Maximal. I feel like this would be the smallest map size when creating a new game. Please help.

Side question: Are the features for CoM for Windows, gameplay-wise, available for CoM?

I did up a mod for CoM for windows which addressed this.

https://www.slitherine.com/forum/viewtopic.php?t=114633