It's pretty.
I wouldn't mind it entering the charts I don't think it will ever be in the top 20 even though I could be wrong.
Yes, it will definitely get more popular, isn't it #1 among nameberry users? It is huge in the instagram community.
Might get shortened but maybe not. It only has two syllables.
Ellie is cute.
The thing I find difficult is that the original pr. emphasizes the second syllable and I find that hard to say. I prefer ELL-o-wen.
If you want less common:
Éowyn or Eilonwy.
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https://www.behindthename.com/pnl/6232