LOVE DEX! The only thing about Biana being on the covers is that she couldn't be on Nightfall, because she was found laying in a pool of blood barely strong enough to move, let alone levetate 200 feet into the air while being invisible without Fitz noticing... -
And she couldn't be on Keeper because she thought Sophie and Dex were dead and hadn't even manisfested yet, Exile she was a little mad and grieving, and plus didn't know about Sophie's mind and all that. Everblaze she would have been killed in the Everblaze or they would have felt her grab on, Lodestar she would have had to make herself know to help Sophie and it specifically said who was in and out. Flashback idek... Or Legacy...-
I mean... true. But most covers have a specific scene in mind, and I’d Biana wasn’t there in the book... I’m gonna guess she wouldn’t be on any cover except for Neverseen. Though... I didn’t come to that realization before!