Many of these need full sets. Except vitality and poison builds maybe. Callidor can do it with more common items. Also you will not be impressed with bwc or stun jacks in a 6 month old game.
Casters gain their damage from ultimate level skills which is why they almost always need good items in excess in GD to get anywhere.
this makes zero sense as BWC and Stun Jacks are 2 of the strongest skills in the game. Both can be leveled from beginning of game all the way through farming best in slot gear.
Druid is short on debuffs and it will only be aggravated by 1.008 balancing. It makes dealing with undead more difficult as they resist cold. I don’t know how spellbreaker plays but there is not much difference between them from the first look other than night’s chill.
And that TSS build is the one that absolutely needs set and a few more legendaries since it gains most of its damage from procs.
With 2-handel ranged primal strike, I would consider Vortex of Souls. A very fun weapon! Each shot will penetrate and trigger lightning. Makes for a fun show There is also some aether damage.