I want to suggest that few mobs that basically holding you down (feet tie) should get modified or remove that feature. I am talking about
Watery grave of sport - Drowned male (male/female) if you get 2-4 of this mob in your screen even far away from you, they will chain tie you and you just stuck there for good 5-10mins standing. They can attack you 2cells making melee player has no option but just venze and continue standing in town until duration gone.
Grave sea dancer in deep sea also spawn her magic attack on player, continuous stoping player movement, making player very hard to move around. They never run out of mana but just to continue casting on you, again if you have 2-3 of this mob casting on you, they can hold you down very good. I think this mob damage is decent just the way that the cast spell on player holding still is not good.