Since FFXI I've favoured the Dark knight class. It isn't present in FFXIV but the developers have mentioned they're considering it for release at a later time.
Give the DRK is an 'advanced' job class, what class do you think I should level in anticipation of the DRK's possible release? This would be to ensure that when the class is released I can go directly and do the job advancement quest without having to level the job that is a prerequisite of the DRK (Since I'll have it leveled in anticipation).
Obviously this is all some speculation, but any advice and educated guesses could help inform my efforts...