Also be creative my good sir. Some of the wizards best spells need him to be in close range and there is that level 6 spell that kinda requries the wizard to be close in. So for instance:
*Situational
1st Level spells
Eldritch Aim – Increases the caster's Accuracy.
Fleet Feet – Empowers the target with unnatural speed, increasing their Movement Rate.
Wizard's Double – Creates a duplicate of the caster to distract enemies, granting the caster a high Deflection bonus against a single attack.
Spirit Shield – Surrounds the caster with a shield of spirit energy, granting an increased Damage Threshold and a Concentration bonus.
* Thrust of Tattered Veils – A quick strike of Crushing force, dealing little damage but having a high chance to disrupt enemy spellcasters.
2nd Level spells
Bewildering Spectacle – Enemies in the area become confused.
Bulwark Against The Elements – increases the caster's damage threshold for burn, freeze, corrode and shock.
Merciless Gaze – Increases critical hit chance.
*Mirrored Image – Increases Deflection of the caster but the deflection bonus is decreased with each received hit.
3rd Level spells
Concelhaut's Draining Touch – The caster's hand becomes a toxic parasite causing corrosive damage to the target, weakening it and leaching a portion of its stamina.
Deleterious Alacrity of Motion – The wizard will attack faster, but will also suffer stamina damage during the duration.
Ryngrim's Repulsive Visage – Targets near caster are Sickened and Terrified by the wizard's horrifying appearance.
Llengrath's Displaced Image – Increases deflection and reflexes of the caster.
*Expose Vulnerabilities – Reduces the damage threshold and concentration of the target.
4th Level spells
Confusion – Confuses all enemies in the area.
Fire Shield – Increases the freeze damage threshold of the caster and inflicts burn damage to any enemy that hits the caster.
Ironskin – increases the caster's damage threshold for 10 attacks.
*Essential Phantom – Summons a ghostly double of the caster that fights with its bare hands, doing Shock damage. Other than the appearance of the caster, it shares no other properties.
*Dimensional Shift – The caster and one ally are able to immediately switch locations, leaving a shockwave between them. Anyone caught in-between may be briefly Stunned.
5th Spell Level
Blast of Frost – Creates a bitter surge of ice and freezing cold air, inflicting Freeze damage on anyone caught in the conical area of effect.
Llengrath's Safeguard – An insidious magical contingency activates when the caster hits 50% Stamina. He or she immediately knocks all immediately close enemies prone while gaining a Damage Threshold and Defense bonus for a short time.
Torrent of Flame – Instantiates a terrifying inferno of flame around the caster, inflicting Burn damage on everyone nearby.
6th Spell Level
Citzal's Martial Power – Caster temporarily sacrifices arcane power for martial might. Wizard gains bonuses to Deflection, Accuracy, Might, Constitution and Dexterity, but becomes unable to cast spells or switch grimoires for the duration of the spell.
Gaze of the Adragan – Gives the caster the mystifying gaze of the adra creature that provides the spell's namesake, Petrifying enemies within the area of effect.
Minoletta's Precisely Piercing Burst – Creates a burst of of deadly force around the caster, causing any enemies in the immediate vicinity to take Pierce damage - bypassing their Damage Threshold.
Arcane Reflection – Creates a field of arcane energy around the caster, reflecting hostile targeted spells up to 5th level back at their casters (for a total of 15 spell levels).
*Death Ring – Calls a black ring of necrotic energy into being that spreads out in all directions, causing Corrode damage to everything it touches and potentially destroying those with low Stamina.
And viola, suddenly some of the spells become that much more useful if you build for a melee type wizard.