These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Eden Eternal
That One Attack: Unremovable damage-over-time attacks which stack and damage reflection buffs/debuffs. Made more annoying/challenging by the fact that most player interrupts all trigger the boss'sMercy Invincibility timer and the bosses can spam the attacks.
They Changed It, Now It Sucks / Broken Base: The Bard skill "Burning Metal" had been changed in a patch in Aeria Games' version, given a 2-second cast time from previously being instant-cast. As this change effectively changed its kiting abilities as well as its use in normal parties, many people were unhappy with this change, while just as many were happy about it since then other people couldn't 'exploit' it for said kiting abilities.