Not to bring Nintendo into a PoP discussion, but one of the main reasons (besides animation) that made Wind Waker look more like a cartoon than any other game of that generation was the lack of black outlines.
It really helped make everything feel more cohesive in look. Had Link been outlined, his weird artstyle would stand out even more from the backdrops. It's not going to bother me in PoP since the animation is sure to be there, but I do think these shots would look better with the effect turned off.
He a quick and shoddy attempt I did at removing the some of the black line effect on the right side of this character:
Before
After
