Parsers can be a fantastic tool to shed some light on where the party as a whole can improve. I for one would welcome the addition of one to the game. That being said, there will always be people that are a-holes about it, but that can be said about anything, even the game itself.

On the "omg these elitists kicked me because they said I wasn't doing enough dps" note, you have to be under-performing pretty badly to get kicked because your numbers are low. I have yet to see it in things below Alex normal, but in the endgame stuff, if you are a detriment to the group you *should* be replaced because at that point you are wasting 7 other peoples' time since you obviously aren't prepared. (I say that from a job knowledge standpoint, not a mechanics one)