I would like they change the rules for learning spells for a wizard. The actual one make wizards useless when there is a countdown in the adventure : "Yes, I know we must do something about that evil necromancer before he release his swarm of monsters, but I need two month to copy and write those spells in my spellbooks, I'm not a cleric, you know. Oh, and by the way I need 15000 gp in precious ink, please give me your money"