Fabric of reality works for the one aether build that uses %WD, CT. Outside of that it just sits there.
I’ve stated much of the same on mental alacrity, it feels more like a second node on other skills that bear inflated mana costs for their point efficiency (and even then they don’t always carry the build).
Energy is a yes/no thing where you either have enough and never worry about it or you don’t and it’s build limiting. Energy is easy enough to pull from other sources and still be ahead on damage as seen in cold pblades infiltrator vs. spellbreaker. The energy leech on arcanist is generally useless.