I wouldn't mind this, if there were separate queues for DF for these two kinds of people, and you could make PF where you can set the "show numbers" to always on.
Though keep in mind that most tanks and healers would go into the queue with parsers.
Of course the game can be played without a parser. To some extent. But 90+% of Savage groups do use a parser. And I would bet that there would be no A4S clears without the use of parsers.
And of course you can be pretty good, and even gradually improve without a parser. But can most people do that?
Also keep in mind, that even those ice mages think that they "play and improve just fine w/o 1" and THAT is a problem. They think they are good, but they are not, so they don't search for ways to get better, they think that failures are always caused by their fellow DPS, and they are holding others back.
1) Don't put words into my mouth.If a personal parser system is added people will use that as a shi starting reaction to a wipe. I can see someone like sirdarts saying things like "wtf did you guys parse on the dummy? then saying LIES cuz we wiped" who would then kick the other dps. That type of behavior shouldn't be accepted in duty finder. Infact 9 times outa 10 it isn't "low dps" that can cause a wipe its people not working together.
2) If the wipe was due to a fail of a DPS check, then it is 90+% of the time the fault of the DPS. Now you can just try and try again, and bash your head against a wall, or vote abandon. With a parser you could see who is having issues, find out why he is having issues, and find ways to fix it. If it can't be fixed, you just replace ONE player, don't have to ditch the whole group.
3) Why is it OK to kick a tank that's underperforming, losing agro and causing wipes? Why is it OK to kick a healer who doesn't heal right causing wipe? Why is it not OK to kick a DPS that's not doing enough DPS and causing wipes? ANSWER THIS!
OF COURSE it depends on the content, that's why we are mostly talking about content with DPS checks, like for example Bismarck HM. You know that story trial, with a small DPS check, that often causes 6 wipes per attempt exactly on this one DPS check. And there are little to no mechanics in this phase. So yeah...Remember dps is dependent on too many factors, and should be a judgment call on who is good or not. Someone with a high dps can just be as much cause for a wipe then the supposed low dps. Alot of it comes from learning the content, not just the class. And learning the content comes from grinding it and experimenting when to push yourself and when to pull back.
People who don't know they have to improve will never improve. And they will never know they need to improve without a parser. Once again, most people think they are the best they can be, even the ice mages, even the WM-free bards, even the 1-2-3 Dragoons.And lastly having a paser system will not do any benefits, people who want to improve do improve regardless, people who don't, won't. Enforcing a parser will not change that. What it will do is is create exclusion in DF, which is the last thing we need. As parser systems are not very newbie friendly so if you have new players (who will not parse high as their are learning) people would just boot them, and site "difference in playstyle" as reason.
You are splitting players into 2 groups, people who want to improve and people who don't. But there are 3 groups, people who want to, people who don't want to, and people who don't know they should improve. And I am fairly certain the third group is the largest.
NOBODY cares about parser numbers in low level dungeons where people learn how to play! But people can EASILY pick up bad habits already there, that's why they should see their own numbers so they can see whether they are doing good or not.
NOBODY even cares about parser numbers in higher level content as long as this content is getting cleared.