Unless of course he decides to go evil all of a sudden and does like Greyback did and just starts killing at will and then he would be part werewolf all the time. But considering the fact that Lupin is one of the greatest characters in the books he will never become evil (thank heavens for that). And as for time turners... it would be okay for them to make another appearance but if they were used all the time, then that would make for some pretty repetitive and boring story-telling. What does everybody else think about this?