Just going to take a swing here. Geomancer has the least chance of entering this game because whatever it can do, they can add to WHM. GEO was kinda doomed when they made earth element attacks the main source of damage for CNJ/WHM. If SCH/SMN didn't end so badly we would have likely seen GEO come from CNJ, but right now it would be a tad redundant.

Bluemage is something that they will give the SMN treatment. It won't play anything like a previous BLU and will instead go into one of two archetypes. Either it will have a 30second oGCD ability where it can "learn" or "Counter" and attack from a targeted monster and use it right away, or store it for later in addition to a mix of monster and weapon skills. Or the one that will really piss the world off, it'll turn into a Morpher/Druid.