I think
Esther has a lot of revival appeal. It's very similar to
Astrid, which is experiencing a boost in popularity. And
Esther has all the earmarks of becoming a hipster favourite. I'm actually surprised it's not caught on more with the Biblical namers. I suppose it's a bit too soft and wooly for the kinds of names they like.
I find it quite pretty and I wouldn't be at all surprised if we saw
Esther rise up a few notches in the charts.