Arcane Assistance (Su)
At 3rd level, an Arcane Fountain may expend a point from her arcane reservoir as an Aid Another action, increasing the caster level of any spell cast by another spellcaster adjacent to him by 1 for every point spent in this way and their concentration check by 2.
This ability replaces the arcanist exploit gained at 3rd level.
Spell Charge (Su)
At 7th level, an Arcane Fountain may sacrifice a number of points from his arcane reservoir, or a spellslot of equal level, to grant a spellslot of that level to an adjacent spellcaster.
This ability replaces the arcanist exploit gained at 7th level.
Greater Spell Charge (Su)
At 13th level, an Arcane Fountain's ability to spell charge increases, charging all adjacent spellcasters to him for a spellslot of an equal level to half the sacrificed arcane reservoir points or, instead, sacrificing two spellslots of the level you wish to Charge.
This ability replaces the arcanist exploit gained at 13th level.
Arcane Conduit (Su)
All allied spellcasters within 30 ft of the Arcane Fountain gain a +2 bonus to their caster level and a +4 bonus to their concentration checks, this stacks with Arcane Assistance.
Once per day, the Arcane Fountain may immediately restore his Arcane Reservoid points fully. In addition, whenever resting, the Arcanist regains his full Arcane Reservoir, instead of 3+ 1/2 arcanist level.
This ability replaces magical supremacy.
-------------------
I'm imagining an archmage leading his students into battle, bolstering their spells with his inspiring presence and arcane might.
Wow. This seems like an awesome archetype!