Good point. But I don't mind it. Got as a book is more fantasy, the show is more realistic and they avoid most of the supernatural element and keep it as a mystery like real life. In the books all the Stark kids warg into their direwolf, on the show, only Bran does it. And in the books I read somewhere that Jon's ressurection will be tied to Ghost whereas he warged into him upon dying and he is stuck into him. On the show it was left to the imagination. Maybe it's the Lord of Light, maybe not, cause The Red Witch said she had lost her faith.
Thematically also, it's too difficult to do on a tv show and the books are on another level and thought out by one guy for decades carefully planning what things means, where they are going. I'm afraid things has gone too much apart already between the books and show.