replace the aura for w/e. side note, if you replace it for [Growing Power], you can swap augur secrets for reaping chackram
Swap adaptation for rolling guard if you are used to shield gating and a less lazy gameplay/for higher enemy level

Keep in mind that for [Equilibrium] to be really usefull, you should have a pet with [Synth Fiber] to be able to pick up hp orbs at max hp and get energy. To get energy orbs cast your 4, then use your chackram and kill all of the enemies hit by it, some will drop hp orbs due to chackram.

A good alternative to [Equilibrium] is [Primed Flow].

Always remember that your chackram multiplies the damage you deal to enemies by a certain ammount, acting like banshee's sonar (a sepparate multiplicative modifier to all dmg).

Another subsume option is eclipse/breach surge for damage, or gloom for survivability.