I'm in favor of removing the despawning mobs method and just adding time extension mobs like in Dynamis. When you are rank 50, these other mobs in the dungeon are pieces of garbage though, they offer you nothing useful. They should make killing them useful, like make the mobs drop armor and weapon pieces or even drop items you can use for dungeons only like HP and MP boost potions, like back in good ol' besieged. We are seriously missing out on a lot of battles. It's like watching a movie then asking to just fast forward to the ending.