I kinda beg to differ here. I have been seeing a pattern of having more divines in raids because dots are viable damage and having more healing power is never bad if your not sacrificing DPS for it.
Ran a Abbot yesterday where the mentality was "so long as the divines stay alive and dotting we win." And it worked.
Its nice that I am able to do more in a raid then just heal/rez/buff bot it BUT when it becomes better or at the least, no different to bring too many divines because you dont lose much DPS there is a problem. Maybe change the dot to 2 stack? I kinda like how a maximized/empowered single cast will kill most single target trash so I would hate to see the spell do less damage per tick but I do think the 3 stack crit ticks are pretty insane.