All of the gear bonuses are either keyed toward one specific school (+1 ice Def, +2 ice atk) or a broad covering of all schools. I would like to see gear with mixed school bonuses.
It makes sense that an Ice Wizard would want protection against Fire spells, so I'd love to see something like a robe that offered +3 Ice Atk and +5 Fire Def.
Obviously higher bonuses for higher levels, but you get the idea.