This is specifically for melee classes (my favorite).
The bad: Wolf and Bear Druids got deleted from the game with the attack speed shenanigans. They need to either revert or rework the attack speed formula to allow the frames per attack to reach at least 5 or 6 with high end gear, I think they are either stuck on 10 or 11 frames per attack atm on PTR which is a complete joke and irredeemable if the patch goes live in such a state.
Assassin changes in the Martial Arts tree are very nice, but are held back because of 2 reasons:
1-Next hit delay issues on the projectiles from Claws of Thunder and Phoenix strike. Dragon claw and Dragon Talon finishers release the second and/or third charges too quickly, this results in only the first finisher charge hitting the enemies, this activates a 4 frame hit delay, so the second finisher charge that comes out in 3 frames or less will not hit the same enemies.
2-There still aren’t any Claws that deal high amounts of physical damage. This sort of pidgeon holes the Assassin into playing the caster role with traps or being a kicker uber slayer, or a hybrid of the 2. If we got high damage claws we could play a max Dragon Claw, max Claw Mastery build like a Frenzy Barb dual wielding high damage swords or axes, but no such Claws exist that deal damage like the good one hander swords or axes (Grief runeword, etc…)
The good: Spearazon is fixed, it was always close to being viable but had a few problems. It still needs very specific gear, for example very hard to obtain spears such as Breath of the Dying runeword on Ghost Spear or Ethereal Hone of Sundan upgraded to elite, socketed with a Zod rune and either 2x Shael or 2x Jewel with 15IAS and x%ED, and furthermore also needing specific attack speed breakpoints that only look reasonable with an act 1 Merc with Faith bow, but when you obtain all of the pieces you are rewarded.
1-Dodge/Avoid lock: this was suicide against travincals, black souls, etc… dodge lock has been removed from the game, so Amazon’s will no longer get dodge locked ever again. The build was unplayable until this fix because Fend relies on life steal to survive which was impossible while stuck in dodge animations. This also helps tremendously with the next hit always misses issue that often resulted in death. This is a massive buff; The Devs giveth us the Amazon at the same time they taketh away the Animal Druids.
2-Not enough DPS in high player games (player 4 and up). This has been completely fixed. The turbo attack speed of Fend in 2.4 is enough attacks per second to proc
Atma’s Scarab like crazy, this fixes the damage problem completely, because anything with the amp damage curse dies insanely fast.
3-Physical immune: See above, this is partially fixed with the attacks per second increase on Fend making Atma’s Scarab proc extremely frequently, so attacking packs of physical immunes for example Stygian in the throne of destruction is no longer suicide, if anything you might need to chugg a potion waiting for the Amp proc.
TLDR: New and faster Fend combines with Atma’s Scarab to deal insane damage, and the amazon is tanky enough with the new Dodge/Avoid changes to be an effective platform to deliver the dps. Blizzard deleted 1 melee class from the game (wolf/bear druid), did nothing to help 1 melee class (assassin), and they entered a fresh, new melee class into the game (amazon).
Net change = delete your Druid and make an Amazon instead, and trade for Atma’s Scarab, ethereal Hone of Sundan, and 15ias %ED jewels before the price sky rockets on these items because if you love d2 melee classes like me, you are going to want to rock one of these geared out Spearazons at some point because 2 frame melee attacks proccing Amp damage and melting a pack of enemies is just too fun to pass up. Bosses are easy too with the 45% crushing blow on the Hone Sundan Spear + Goreriders, etc… and a 5 frame jab or with a little more attack speed push a 4.66 frame Jab and a Amp damage chance from Atma’s making bosses dissappear.