I'm hoping the Geomancer has damage-dealing spells/abilities, because that's what the job has been about in all of its appearances (FFIII, FFV, FFT, FFTA2). So far, I've only been reading about buffs and debuffs. Nothing to get excited about really.
In III and V, Geomancer is basically a mage that uses random, no-MP-cost semi-powerful (Wind Slash) to very powerful (Shadowflare) spells based on the party's current area.
In FF Tactics, Geomancer uses decent-strength, long range, AoE, omg-instant-cast, no-MP-cost spells that can also enfeeble the target. The spells are based on the Geomancer's current terrain. For example, the Geomancer can use Tanglevine when standing on grass, which deals damage and has a slight chance to immobilize the targets in its AoE.
In FF Tactics A2, Geomancer has a spell list of low-MP-cost nukes, with options either available or grey-out depending on location and weather. For example, Shining Flare deals AoE fire damage and can be used when the sun is shining.
This is the Geomancer players have wanted.
Has SE said anything about Geomancer's magic DD capabilities?