I'm playing a wizard in ol' Jum-Jums game. What I have learned so far, is wizards shoot from the hip with the wands. Like pointy hatted gunslingers, they make with the wand action. Zero level spells are for usage against NPCs that annoy you. Those area affect damage spells that annoy other classes will destroy a mage. Having a limited spell book is more appealing to me than having to sift through the entire spell list every time I pick spells. Ignore your familiar, and hopefully the DM will too. You can never have too many scrolls.