While we're on the subject of spells, can I suggest a very minor aesthetic change that will help differentiate between class levels and spell levels (and make spells sound more like an academic thing): rename spell "levels" to "grades"! i.e. a level 3 wizard can cast grade 1 and 2 spells - it's a minor change that won't have any mechanical effect on the game, but I just think it's a more elegant way of referring to them, and will help avoid overuse of the term "level". Even things like "sphere" or "order", or any other word that basically means "level" (but isn't "level") would also work.
As far as spell levels go, players in my games have taken to refering to them as circles. Which sounds vaguely more mystical. 1st circle spells, 2nd circle spells, or spells of the 5th circle, for example. Its vaguely more magical sounding.
Though this might be a thing for a sidebar where it offers suggestions on flavorful modifications to spells.