I'm in favor of this, it's way more intuitive. What kind of wizard goes to a dangerous foreign land without ever having read any of his bloody spellbooks? Wish might deserve a special case here, honestly I don't see why anyone should ever be generated with that spellbook. But if they are, a free reading is not going to enable anybody to actually cast it... and anyone who can get to the point of casting it can easily read the book anyway.
So what if it's a tiny buff for Troll Wizards? Is anybody seriously thinking, "OH NO, my Troll Wizard games are going to be RUINED!"?!? There's been so much new content and so many significant nerfs in the last couple of years that a very minor convenience change like this is a drop in the ocean.