I found the earlier stuff to be good with lots of challenge. I started playing in Beta and continued at launch. Unfortunately, SE have nerfed a lot of the earlier content to make it easier, combined with Duty Finder Roulette putting over powered characters into the instance the early dungeons are probably very boring for everyone. Remember when Ifrit story mode was very difficult, Amdapor Keep Demon Wall (they removed the bees!!), etc. SE seems to keep the challenge only at the pointy end of the game.