I disagree, while its true the Wizard concept has the potencial to do anything and everything, it has a particular effective deterrent... it's hassle with little gain
> Try to have a little of everything... you'll be too spread out to be effective
> Buff yourself to ridiculous heights - you're still a subpar fighter, with just better defensive effects
> Blast your way forward, and you better pray its dead before you run out of bullets
> Utility spells - great out of combat and for convenience, but still eating slots from a rather small resource pool
Most of these result in the Wizard either using too many turns for set up, or having too many tools for so little slots and not having the best spell for the situation at hand. Because naturally, he focused on what gives him a better shot at staying alive
On paper the Wizard is indeed a god, but in practice it needs alot of circunstances going its way to be godlike