..I've no idea why people go with that clunky mechanic called CoW. It stops you from playing properly since there is no time for extra pw:s, no time for raid/group healing while that slow spell is taking a century to cast. Sure, if a single tank, a single player is dying from a single attack, it might be a niche, but I see no viability for almost all, to not say all real fights.
Has anyone even made the math for it? Is it even higher HPS than just dropping a critted PoH? Or a critted flash heal and a pw:s?
It just seems so inadequate to compete with the regular flow of disc healing in most real situations.