The Ilvermorny Castle page is indeed aesthetically pleasing without other images, that is true, and the only solid image we have of the castle is what is in the trailer back in 2016. I did notice the map image in one related page and the Quidditch Pitch being on another page (though not in the Ilvermorny Template box). The reason I bring up the game and the trailer and all is that, even thou the trailer for the essays shows a greater depiction of the castle, there are in fact three takes already that people should be aware of.
The map shows one take and WB change it in the trailer. Even though the trailer has a good depiction, we might not even see that depiction in any hopeful media. The Quidditch game also has a depiction, not in our face depiction, but it is in that game (wish I could see it more clearly, it is my dream to see that school in anything).
The point being is that people should be aware of the many looks of the castle and should be easy to find as well. The map depiction is in the Behind the Scenes section of the Ilvermorny School of Witchcraft and Wizardry page. The Quidditch pitch itself in on another group page of Ilvermorny Places (thou not in the template box).
But I do see the map depiction in the school page... castle link.... this is kind of a pointless rant. Just be aware that we should accept all alterations of these schools and show them and any one of them or none could be the finalized take.