Sage is my favorite healer but it's a lot of trickle healing compared to other healers. With the change, since Pneuma used to give 5 Haima stacks worth 2000 potency but now its 4 stacks for 3000 potency each, then that's a +2000 potency buff on Pneuma.

The extra 3 seconds means that it's an extra 4000 potency I think.