>>54724571Sprites showcase each Pokemon's personality. Models such as the gif of the Butterfree posted in the thread tend to cause Pokemon to look kind of blank.
Even Butterfree's Gen V animations showcase this. Despite the weird wing movement, stuff like Butterfree's hands and mouth moving are way more expressive than the 1000 yard stare the 3D model has. It might be the light they put onto the eyes as a part of the sprite, but it also doesn't look dead inside like the 3D model.