>>106579268They don't need to have the shading or 50 characters on-screen. But the characters themselves are still drawn WAY better and have better color palettes than what is actually in the show most of the time.
The posters give characters an actual line of action while the show is often so rigidly on-model, it's ugly. Does it really cost more money just to push a character's spine when they have to be drawn in a storyboard anyway?