A part of me wants the parsers, but another part of me remembers how parsers played a big role in World of Warcrafts community becoming very toxic. Parsers are amazing when playing with friends/raid, because those players want to help you improve, so they will criticize your actions in a polite way and you, know that there is no malice behind those actions. When playing with strangers, the parsers will be used to demean and insult other players, which is something that Yoshi-P does not want to see in this game (this is one of the reasons, why we can not whisper to each other during dungeon runs) period.

Personaly, I think the harm that the (official) parsers will bring, will outweigh the benefits that it brings to the community. We already have level 60 players kicking newcomers from the leveling roulette dungeons, because they are too slow for them. Imagine if they had parsers aswell, they kick, post the parser to demean them infront of the group use this information to stroke their epeen.

The best thing would be to add personal parsers, this way players that want to improve can use it to better themselves. SE could release data on what the avarage DPS should for each class when they have full ilevel 250/260/270 etc and players can use those data to compare themselves.