I'll let the devs sort out balancing numbers and potencies. I'm just hoping they will rethink some of the mechanical implementations (confession stacks), and lack of utility (stoneskin removal, no group/raid buff)
Ultimately I tried to keep my suggestions relatively simple and easy to implement code-wise. Since Confession was already implemented as a buff, it would likely not be too much of a change to make it apply to the WHM rather than his cure target and remove the duration so it works like aetherflow. Giving Stoneskinn II back is also relatively simple since the skill exists in the game code already. Making Presence of Mind apply to the WHM's whole group via a trait should also be a relatively simple thing to implement.
Basically, making suggestions within the changes the devs already made, is at least somewhat easier to implement and therefore a tiny bit more likely to be considered.