Honestly tho, I don’t see Barrier as a nerf-worthy topic. There is a fundamental difference between True Shot and Barrier.
True shot really needed to be nerfed becuz it was simply one-shotting everything like a wrecking ball. There wasn’t much of a gaming experience there.
But I hardly see “This battle is taking me too long” as a valid reason for a nerf, as there are many ways to overcome that situation. In comparison, there really weren’t that many options against True Shot. You were either one of the True Shotters, or you were the sorry brokes getting trounced into the ground.
Another elemental consideration is that the amount of resource needed to get Celestia triple traited is a GREAT deal more than some common rarity cards. So I hardly foresee the PVP pool getting flooded by barrier-happy Celestia anywhere near the degree Centaur Scout did.