Quote Originally Posted by BaconBits View Post
Just make classes unable to queue for any duties above level 30 unless they're in a full premade. Then throw a huge (and I mean HUGE) sign in the player's face telling them that they need to go back to their class instructor to get their Soul Crystal after the Sylph portion of the MSQ is completed.

That way no one will have to deal with telling people to get their soul crystals at level 50, or in some serious fringe cases, level 80.
That is a bad unless they remove the quest block in the MSQ as well that prevents you from unlocking the jobs in the first place. If you are playing only one class/job then you will usually reach the 30 class end before the MSQ quest that allows you unlock your job.