I was sure the special dark energy card wouldn't be like the original special darkness energy as some people thought but I was expecting it would have some disruption effect which is usually associated with darkness-type cards (something like "when you attach this energy, discard 1 card from you opponent's hand" with or without looking, wtv is more balanced), not this... kinda meh...
I hear ya; people have been speculating for a while. I was hoping that maybe it would grant a "Shred" like effect to a Darkness-Type with it attached... until I realized that would probably be too good given that Yveltal-EX is unlikely to be leaving the format anytime soon.