In-Game Parser.

[Hayward]

Yoshi-P does know his audience, and he knows there are plenty of crybabies who would be pretty upset when they find out that they are, in fact, bad at their job and would be getting kicked for now obviously holding a group back. And instead of getting better, they would just quit the game and go play something more friendly, like Farmville. Though I think the devs were surprised to learn how bad some players are, given how hard they had to nerf SCoB.

This quote alone makes the case against party-wide parsers. We know good and well people like you will litter the elitist forums with the parses of players you and your kind deem "subpar" (You guys did it in FFXI. What makes you think you won't do any different here?).