What would be on the cover of...
Stop treating GW2 as a single story. Each Season and expansion should be their own story.
Depends on who published it, I think:
Humans might mark it with symbols or representations of Kormir or the pantheon as a whole.
Norn might mark it with the Spirits of the Wild, the Spirit that is most associated with knowledge, or even an abstract representation of Kormir (the norn recognise the gods as spirits of abstract concepts such as knowledge, they just don’t worship them).
Asura would probably put a representation of the Eternal Alchemy, or the author/publisher’s own mark.
Charr would probably leave it undecorated or with just the publisher’s mark (or the sigil of their Legion).
Sylvari might mark it with a symbol representing the Dream or the Pale Tree – sources of knowledge for newborn sylvari.
A map, however, might be the most universal option.
People don’t hate Scarlet like Game of Thrones fans hate Joffrey.
They hate her the way Star Wars fans hate Jar Jar Binks.
It would likely be published by the Priory or humans, given those are the two groups focused most on history. Norn still vastly prefer oral storytelling, and asura are probably far too paranoid to publicize outside of working for an order.
Stop treating GW2 as a single story. Each Season and expansion should be their own story.