Basically it comes down to Flash being a not very optimal AoE enmity builder for PLD. If you take all ilvl100+ players, PLD+WHM+BLM+BRD/BLM, and throw them into any level 50 dungeon, it can be quite hectic to hold hate with 3+ mobs. If your BRD casts battle voice/foe's and then the WHM and BLM start HOLY/FLARE bombing all you can do as a PLD is spam flash to keep up. I guess people complaining about PLD only having 1 rotation can cheer up now, we have the FLASH (3/4) > Circle of Scorn > Fast Blade > Riot Blade > Flash (Loop back to Fast Blade, or circle if off cooldown)...