Have now read a bit more of it, I'm not sure I understand what the point of Cleric Stance is. Why not just have access to all abilities at all times? I mean I don't particularly read anything that would be mutually exclusive to have, and the passive bonuses you mention wouldn't be relevant most of the time so the relevant ones could just be baked in and the rest dropped.

Or is it meant purely for hotbar cleanup, like in Cleric Stance the DPS buttons become healing buttons?