That does look better, but it goes against the art direction I think they're going for. Pearl and Marina have a lot of opposites in their looks (even more so than Callie and Marie did). Marina's eyebrows and the shape of her eyes are pointing up, while Pearl's eyebrows and the shape of her eyes are pointing down. Pearl has a big forehead, and Marina's hair covers her forehead more. Pearl wears white while Marina wears black. Pearl is short and Marina is tall. Pearl's clothes cover her up more and Marina's cover her less. Pearl has a lot of attitude and Marina is has less attitude. Etc. There's tons more opposites like these.
I feel like the whole point of their designs is to be the opposite of each other. Pearl's permanent angry look is intentional, and I don't think they'd go against that design even at the cost of making the character look more awkward on her own.