After thinking about it, a personal parser won't change a thing. Players willing to improve will use it sure, but without proper metrics to measure yourselves against, hard to see where improvements could be made. To add to that, the players we are mostly complaining about, will probably just never use it and turn it off entirely. It's use will be extremely marginal at best as I assume ACT will be able to do it's job still and will be miles ahead of the in game parser functionality wise.

The only way to actually increase DPS accountability is to make their numbers known to the entire party sadly. If it's personal, nobody but them will ever know.