Parser exist in mostly mmo. That tool is needed but the effect is more into bad side, but I have to agree we totally need it.
When parser coming out, some class might be unsatisfied with their result compare with other class.
It's like why Monk dps are higher than Dragon and so, and then player demand nerf for that class.
Tank & Healer demand more dps upgrade and many more complaint.
I think that's why SE not implement that yet, because it happen to other mmo, I used to play WoW before and people keep arguing over it.
SE is trying to find the best solutions, it might be take some times but if its worth I will wait.
I believe hardest content can be done even with average dps 350-400. (Correct me if I'm wrong)