[Spoilers EXTENDED] In your opinion, what is the best change the GOT show made from the books?

There are a lot of differences between the two, and for the most part people agree that they were not good, but what about the exceptions? What changes did the show make that you actually prefer?

Personally, I liked having Littlefinger be the one to try to have Bran killed. Obviously basically everything surrounding that bit was terrible, but I think that explanation is far more interesting and plausible than that Joffrey did it. Joffrey sending the assassin with Catspaw doesn't really make sense, like sure you can argue he's dumb enough to do it, but there's not real upside for him. On the other hand, Littlefinger wanted to be "caught"" and for the assassin to be linked to the Lannisters.