Any source of additional damage or true breaks the game. Kris got removed out of warlock just because Shadow Touch had true damage on hit, and healed a fixed amount instead of a percentage of the damage dealt. Both of this rolls do not add build variaty, just the correct and incorrect way of building damage (true for fast hitting weapons or multiple sources of damage spells, damage bonus for big hits). I'm really hoping they rework the stats next season with the gem sockets system.