So the complaints are:

1) Potential long waits on older content when trying to just get new jobs unlocked. (Solo Dungeon with NPCs is being implemented, nothing to worry about)
2) Gated content is unfair. (well as the old saying goes "the world is unfair"; get over it, this is not really a legitimate problem just people talking for the sake of hearing themselves speak)
3) Jobs should be available at level 1--new players starting the game. (These have already been classified as "ADVANCED JOBS" and as such are not "INTRODUCTORY JOBS" like the ones already given)
4) All jobs should be available at lv30 like in FFXI. (This is not FFXI, while the condition to start the job quest is unknown, it is at the will of the development team and no one else, its their vision an the job's complexity might require a more adapt player in the game's mechanics thus making it a different--higher--level requirement to unlock)
5) 2.0's story is sooooo long! (It can be completed in roughly 10-15 hours, faster if you just skip all the cut scenes; which is less time than what it would take you to level up 1-60)