Conqueror might be a problem...
The mass distribution of true dmg with conquer has made traditional tanks, who were already weak with the damage added though runes almost unplayable. When the game was first created the balance was maintained though the role triangle where sustained dmg beat tanks while burst beat sustained and tanks beat burst. with the exclusion of the role of tanks its has created an unhealthy balance where burst always dominates. Currently I am unsure if traditional tanks can be viable with conqueror as a rune. While the removal of a subclass isn't the only issue with the game it is an underlying problem which while seemingly innocent drastically changes the dynamic of the game.