>>85502443The final series has sloppier animation, but the designs themselves are superior. The original designs were sloppy and amateurish. Final one has a stronger silhouette, a better balance of colors and shapes, and is much less ambiguous about how it should look from different angles and in different poses.
Just because you want to fuck it less doesn't make it a poor design. Fionna is more fuckable than Quasimodo, but the latter is a far better design.