Pretty straight forward, using the same software and programming they have clearly already made to track and display damage and healing statistics in PvP, just have this scoreboard display after PvE boss attempts and kills. This eliminates the need for parsers and should be very accurate while allowing people to see in concrete terms their performance. Will allow people to see themselves improve over time and evaluate how they compare to others.
Additional categories for damage recieved and threat generated would be nice, but nonessential.