@OP I feel your pain and I also hope that SE realizes this is a mistake (because they have said it's intentional...for now) and fixes it sometime in the near future.

Unfortunately, what you're likely to get on these forums is a bunch of people giving the unhelpful suggestion of "Lol it's fine just use GC item l2p noob!!!1". Without going into why this isn't a viable option whatsoever, all I can say is that my hope is that when SE adds the other jobs for the existing classes, that other people start to take notice of how stupid this is and throw a stink about it.

In my case now, I just play BLM instead of SMN since SCH is my main with +30 MND in it. I'd like to play SMN sometimes as it's cool, but I don't like having to purposely gimp myself or constantly grind FATEs for more GC seals for an overpriced item.