Possibly, but who cares?
Honestly though energy vampire in proabably the 2nd most fun ability in her kit imo. No matter what you will be using it constantly, whether you build towards it or not, because it's just so good.
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[quote]No matter what you will be using it constantly, whether you build towards it or not, because it's just so good.[/quote] That. Especially in higher level content so your team mates can spam their abilities and you can spam yours