As many have said, my biggest issue with the current class system is that it sort of ruins any sort of long term progression. Once 2.0 hits I'm hoping (and expecting) that leveling slows way, way down, and that having a capped job is something major, with things to do while leveling as opposed to a week grind to endgame where everyone has everything. If multiple jobs are linked to one class, everyone already playing will have everything maxed innately unless they add some major horizontal class development (Which I'm also hoping they do, think SMN and BLU in XI). Not to mention that as things currently are, how varied can jobs be if they share 75% of their skills with other jobs? In a way, it's like regressing back to launch where everyone complained about homogenized class development.