Partly, what you say may be correct, but keep in mind that most updates are based on Korean players. There is no desync in corean server, the game being much more fluid eliminates from the problems that appear on EU / NA. So for them these problems are largely non-existent, but the improved classes are still very visible.

The main problem is that, in general, inexperienced players complain, and the others overlook the idea of: my opinion is not taken into account anyway. Thus, the changes are made on the basis of ignorance and bad suggestions

Partly, what you say may be correct, but keep in mind that most updates are based on Korean players. There is no desync in corean server, the game being much more fluid eliminates from the problems that appear on EU / NA. So for them these problems are largely non-existent, but the improved classes are still very visible.

The main problem is that, in general, inexperienced players complain, and the others overlook the idea of: my opinion is not taken into account anyway. Thus, the changes are made on the basis of ignorance and bad suggestions

In my opinion, currently the classes that deviate from the norm are:
- Zerg 24/7 protect skills huge dps unlimited absurdly fast movement that bugs on the mousemovement and you can't see where the opponent is, most skills have 360 ​​aoe, And the most broken thing is healing with a huge 360 ​​aoe skill with CC and high damage
- Sorc 24/7 procect / ifreame way to much damage and a lot of 100% knocdowns attacks that can neutralize your character on the ground as long as it is necessary. Of course I agree with @Serendipity and of course I'm talking about Awa Sorc not Succession Sorc
- Kunoichi too short coldown for tendon cater and a few other disappearance skills that make it impossible to track movements or determine where this character is during the fight and too much damage
- Warrior probably the fastest and the most bugged by canceling on Q everything, the movement of characters in the game is not limited by stamina. Too much damage for his survivability. His skill damage should be on the last tick as in other characters, so that when canceling them earlier, as they do, they now get significantly lower damage and not all skill damage despite the fact that he interrupted the animation in the mdle as it is now
- Guardian 24/7 protecs huge aoe absurd damage and one of the highest survivors in the game You can't give above hudge dps and survibility with 24/7 protection to one at the same moment
-Succ corsair have impossible to punish skills with high AOE which can blow up the whole block that does not regenerate for the next 30 seconds and often take most of HP and have a low cooldown 
- Succ nova next one super tanks 24/7 protected with broken minion which have a 100% chance to stun if you don't have a protected combo witch works way better than Tamers heilang
- Succ Wizard 24/7 protect ranged spell with CC best aoe little CD and insane damage, to long distanse on his TP or too little cooldown on them
-Valk unlimited movement now and too big damage
- Dark Knight same to big damage in my opinion
- Striker to big damage too or to hight surbvibility you can't have both on a character that is protected 24/7
- Succ Mystic same as Striker
- Tamer I don't say anything , just fix it

In my opinion, currently the classes that deviate from the norm are:
- Zerg 24/7 protect skills huge dps unlimited absurdly fast movement that bugs on the mousemovement and you can't see where the opponent is, most skills have 360 ​​aoe, And the most broken thing is healing with a huge 360 ​​aoe skill with CC and high damage
- Sorc 24/7 procect / ifreame way to much damage and a lot of 100% knocdowns attacks that can neutralize your character on the ground as long as it is necessary. Of course I agree with @Serendipity and of course I'm talking about Awa Sorc not Succession Sorc
- Kunoichi too short coldown for tendon cater and a few other disappearance skills that make it impossible to track movements or determine where this character is during the fight and too much damage
- Warrior probably the fastest and the most bugged by canceling on Q everything, the movement of characters in the game is not limited by stamina. Too much damage for his survivability. His skill damage should be on the last tick as in other characters, so that when canceling them earlier, as they do, they now get significantly lower damage and not all skill damage despite the fact that he interrupted the animation in the mdle as it is now
- Guardian 24/7 protecs huge aoe absurd damage and one of the highest survivors in the game You can't give above hudge dps and survibility with 24/7 protection to one at the same moment
-Succ corsair have impossible to punish skills with high AOE which can blow up the whole block that does not regenerate for the next 30 seconds and often take most of HP and have a low cooldown 
- Succ nova next one super tanks 24/7 protected with broken minion which have a 100% chance to stun if you don't have a protected combo witch works way better than Tamers heilang
- Succ Wizard 24/7 protect ranged spell with CC best aoe little CD and insane damage, to long distanse on his TP or too little cooldown on them
-Valk unlimited movement now and too big damage
- Dark Knight same to big damage in my opinion
- Striker to big damage too or to hight surbvibility you can't have both on a character that is protected 24/7
- Succ Mystic same as Striker
- Tamer I don't say anything , just fix it