I think her current design just really translates better to 3D than some other designs. I think Fauna, Mumei, and Kronii look quite good, at least better than Myth, as well, but Bae's design doesn't lend well to 3D.
But I agree with
@ValkyrieAce, in that ID's look fantastic, too, but more specifically ID2. ID1 are better than Myth, but still feel lower quality than like ID2, HoloX, or IRyS.
They also may have put more detail into her 3D with hopes of ramping up her live performances. But that is likely HOPIUM.