I can easily see a SCH-esque revival for GEO in the near future.
But I think the problem with Geomancer lies within the nature of the job (pun not intended). Do we need really need what is basically an MP based Corsair with weird mechanics right now?
Answer is no, we don't. The only solution I can see, along with an overhaul like the one SCH received, is to create events in which we can use GEO's costant buffs. Which would basically mean slower battles with less "YOU DEAD!" moves and everything that comes with them.
The expansion is only a few days old, and SoA is not an add-on like ACP, ASA, AMKd'E and Abyssea were. It takes time to build up and show what it really is about.
We just got to Adoulin's door, what's behind it.. we have no idea.