1. Class Reworks and Adjustments
Class reworks are major updates that tweak or Diablo 4 Items overhaul an entire class’s abilities, playstyle, and overall effectiveness. These reworks are usually prompted by:

Community Feedback: If a class feels underpowered or too dominant in the current meta, Blizzard might focus on adjustments to make them more viable.

Meta Shifts: The evolving meta in Diablo 4 could lead to certain classes becoming less effective or overrepresented. Reworking these classes helps maintain diversity in gameplay and keeps the experience fresh.

Examples of Class Reworks
Barbarian: If feedback suggests that the Barbarian’s resource management is clunky or underwhelming, Blizzard might adjust Fury generation, improve Whirlwind or Charge abilities, or introduce more synergy with Weapon Mastery to improve gameplay flow.

Sorceress: If the Sorceress feels either too fragile or too reliant on one elemental build, Blizzard could introduce reworks to Flame, Frost, and Arcane abilities to allow for more diverse builds, improve defense mechanics, or tweak mana regeneration for smoother gameplay.

Necromancer: If the Necromancer’s summon mechanic isn’t scaling well in endgame content, Blizzard might adjust minion health, damage, or introduce more options to make the Necromancer feel more engaging and viable for all playstyles.

2. Balancing Skills and Abilities
Balancing individual skills and abilities is crucial to keeping all classes competitive and ensuring no single skill becomes a “must-pick” for every build.

Skill Tweaks
Damage Scaling: Skills that deal too much damage or too little are balanced by adjusting their damage numbers, cooldowns, or resource costs to fit the overall power curve.

Cooldown and Mana Costs: Balancing the resource economy of each class ensures that no class has an overwhelming advantage in terms of sustainability. Adjustments to cooldown timers or mana costs could make certain abilities more or less spammable depending on feedback.

Synergy Between Skills: Often, certain skills or passives might not work well together. A class rework could improve synergy between skills, encouraging creative build-making while maintaining balance.

3. Addressing Overpowered Builds
When a particular build becomes dominant or too powerful, Blizzard may step in to reduce its effectiveness. This could be through:

Nerfs to Abilities: Reducing the damage output or effectiveness of overperforming abilities is a common way to balance the game. For example, if a specific Sorceress build becomes too dominant in the meta, Blizzard may reduce the damage scaling of the skill or introduce a cooldown adjustment.

Item and Affix Changes: Overpowered builds might be fueled by gear and affix combinations. By adjusting item drops, legendary affixes, or set bonuses, Blizzard can curb the impact of certain overpowering builds.

Skill Rebalancing: Skills that cause problems in PvP (Player vs. Player) or PvE (Player vs. Environment) are often reworked to either scale better in certain areas or scale back in cheap Diablo 4 materials others.