^^ Humble opinion.
Life reduction was broken. Recharge reduction broken. DA, projectile avoidance stacking broken, leveling playing field for various builds by nerfing these is a positive.
Then physical spells were made to work, pierce and poison dexterity based too, flat damage stacking on attacks and throwing knives fixed, blocker CC made usable (briar ward), nymph is an appropriate pet, traps are pets too and good at that, better than wolves, poison and bleed work. Full vitality builds now possible, elemental attack builds possible. Not all of these are excellent but its much simpler than before.
Now real bad changes are spirit mastery that had life reduction all over it and only got vitality staves to compensate, 1 skill does not compensate for 3. And vitality and bleed resist scaling with difficulties was unnecessary without complete gear overhaul.
Overall its some broken IT builds ruined, but many outsiders like magicans, battlemages and illusionists received something for them to become viable, and without crazy gear.