I will say the same thing I said with stormblood and with HW, the new jobs should start at whatever the level cap is right now. Red mage and samurai should have started at 60, drk et al should have been level 50. Players should be able to hop right in to the brand new jobs and level them through the new main story. Otherwise they have no choice but to redo old content as a means of getting to new content. In my opinion that is bad design.

Now I know what the common argument is “but then they won’t know how to play it!” Well I don’t buy that argument. That is easily fixed by making the starter quest more informative and introducing you to the job mechanics in a certain way. “Defeat this enemy by using this combo I’m going to now add to your hotbar. Good job! Now here are some defensive cooldowns, use these buttons to protect yourself from enemies!” A simple tutorial goes a long way. Not to mention the fact that there always good and bad players, the ones that want to get good will do so.