The short hair is probably the only drawback I have with this redesign.
The ponytail really gave her more personality, and with the right artists, it was a extension of Anya's feelings.
Yes, is impractical, but capes are also impractical, but we're not gonna remove them from Superman or Batman since they're just that iconic. At the same time, the practicality excuse goes out of the window when they added that scarf, which is just as a downside as a long ponytail.
It doesn't even have to be a long ponytail, a short one like early Araņa would be enough.