Many jobs are already too complex for their own good at max level, especially some DPS jobs. I enjoy a challenge but I want the challenge to be content and not learning my class. I want to be able to pick up and be able to play my class fairly well within a week and that doesn't happen with some dps classes in this game due to skill bloat which is still a problem in stormblood.

The less brainpower a player has to dedicate to their rotation and positionals the more they can focus on the mechanics in content and thus the more complex the actual content can be.