The increasing gap between players and bosses.

Its crazy that Nexon keeps tweaking the bosses, thinking that this will somehow solve the problem. Because of the enormous damage gap between the rich and the poor, when they make a boss that is strong enough to not be soloable by a funded player, a group of unfunded players have no chance at beating it.

They keep avoiding the real problem, but they have to face it eventually. And it has such a simple fix. They can apply a curve to the damage range formula. That way, funded people keep their high damage and unfunded people have damage that is close enough to funded people to be able to play the game properly.