Even a densely populated area like Coruscant was lifeless, as the vast majority of the characters looked almost too stylized to be believable beings. The animation was blocky, everything felt very stiff and the world seemed empty. In hindsight, it is easy to see why the first few seasons of The Clone Wars appeared so rough around the edges. While the rationale as to why this change may seem fairly general, there is a little more than meets the eye in this case. This holds true even in the Star Wars universe, where The Clone Wars got something of a makeover following season 3.
With time comes the alteration of the appearance of animated TV shows if not for the sake of freshening the show up, then rather the sake of the program's overall visual aesthetic. Star Wars: The Clone Wars' animation style clearly differs between its third and fourth seasons.