Giving Assize a 2nd charge solves nothing because holding a stack is wasting damage and MP restore. The damage component would need to be nerfed heavily so that the heal is the primary purpose of the skill and the MP restore would need to an entirely different ability in order to make it a healing tool but as Assize currently stands, the MP restore is FAR too valuable to be kept in reserve and the damage component exacerbates that issue further. The awkward CD of 45 seconds doesn't help it either because how few AoEs actually occur at 45 second intervals.

Realistically, what would a second charge do? You blow the 1st on damage and hold the 2nd for an AoE damage to utilize the heal. Guess what? You are now out of charges and are right back to square 1 where you are blowing Assize on CD because Damage/MP. Nothing has realistically changed. You still don't get to use Assize as a heal outside of that 1 time. That's hardly any better than what you're currently doing with Assize and unless there's a transition that downs you for the duration to build up a second stack of Assize, you still only get 1 extra heal usage out of it.

1-2 extra uses out of a 7+ minute fight. That's laughable for a healing ability but I guess that's the norm for WHM. I mean, I only get 2 uses out of Benediction and soon Lilybell in those same situations, so it's fine. Mediocrity is fine. It's all fine.