Spore druid is workable with the armor on Act 3 and the necromancy staff from Mystic Carrion, but that's about it. It's still just a way worse Wizard/Sorc/Warlock.
And Melee classes just blow both casters and druid/rangers away since they get so many power spikes with items and legendary weapons on top of getting so many extra attacks because of the way Haste works on top of it. Paralyze granting autocrit also makes it super easy for melee to do unholy amounts of damage with Crawler Venom or the paralysis grenades.
It's been feedback since EA that Fighters were blowing everything out of the water, and then they brought in monks and paladins to do even more burst while the other classes are a joke and barely have any dedicated legendary gear.