I guess we all have our own playstyles and experiences. Agree to disagree.
This. No one of my worst enemies would ever stay and wait till I give him all my recasts dots and debuffs, no doubt sorc can inflict more damage per sec applying GoN and SoD all other nasty things, but I've used to play faster, with minimum amount of dots, or using only the most effective of them. I must be sudden, another way, I'll be cleanced, defended against by htl or chm or nonshellpass, or detaunt, or I'll see misdirection m1 in my focus after WoP cast. So for me, Burn Through is an absolutely necessary tactic for bought classes, hell, I'd agree to play without tactics at all, if I only have Burnthrough on my sorc. And there is no place for GoN in my world, since it was nerfed, and no place for noncrit puredamage either, and no hope on frozen touch procs as well
On another hand, Doombolt has corporeal damage, you can group BO with debuff, put some additional points in Agony and viola, 4-5k damage crits would be possible on t4, it's almost like festerbombing with no CD. And yes, in such a case I prefer my doombolts to be undefendable, to all other tactics, furthermore, if I only have RKD, so my prey cannot defend himself, mmmm, dreams.
But it seems, you prefer engi-style, GoN, low noncrit damage, procs, healers overcharge, debuffs, have a luck