Face 4 lips got changed almost as much; it's like they removed the dimples from 2 and added them to 4. Add the other changes on top of that and the result is that all the faces have a more standardized look now... but the fact that they were all stylistically different is what gave each of them their appeal in the first place. 1 was conventionally cute, 2 was soft and silly, 3 was a bit more mature, and 4 was sharp and a little threatening. Now they're all cute. Which is great if you like cute, but everyone else is up a creek without a paddle.