A case could be made when ToD and Shroud was end-game, esp in the hands of a pure capstoned pali or the DA augment. Now probably more of a status/epeen thing (look I grinder DQ with its ridiculous drop rate and overwhelming shard/seal loot tables).
Calomel weap - good to know and even against non-dragons that's pretty good. Really need to learn to run those challenges. I'm never around for cove it seems.
As dedicated dragon beaters might as well add another dmg proc as seems Velah is only one with DR and its 5/magic. Maybe another cold proc as ice dragon in tor best left to caster to kite lmao. I hate that dragon.