So are your monsters hitting "enough" or not?Overall, hitting is about 50/50 unless we use the shield spell. Which at level 18 wizard, I always have at will now (along with Invisibility), so that drops it to about 25/75. Of course, the other casters have shield, but not at will so they are easier to hit unless they use the slots all the time. Of course, I know one of the others has a cloak of displacement, which helps often.
Also, I'm a bit confused--if you're a player, why are you proposing nerfing yourself?