Since XIV's re-release, I have yet to figure out a credible way BLU can be introduced given the lack of lore so far (the idea of Raubahn is about as close as we can get, and that's a shot in the dark). The number of abilities the job can learn and how many can be used at once is also an issue as it could become more powerful than any DPS job we have at present. Team Yoshi would have a devil of a time developing this job in time for the next expansion, therefore I cannot see the job being released anytime soon.

Geomancer, however, is not nearly as difficult as some people might fear. Far from being a healer job, I see it more as a caster that can potentially mitigate elemental damage and amplify elemental magic through auras gained from exploring certain areas/dungeons (Think Sastasha or The Whorleater for Water, The Navel or Cutter's Cry for Earth, etc.). Lore for the job could easily fit into a storyline since we don't know all that much about Gyr Abania to begin with aside from what we know about Ala Mhigo.