I'm a Tolkien fanatic yet can still enjoy Jackson's movies so I'm not averse to changes in adaptatons. I love Return of the King and it completely skipped the houses of healing and the Scourine of the Shire, two of my favourite elements from Lord of the Rings.
...but not having Tyrion kill Shae and Tywin would be real cowardice from the showrunners. Charles Dance as Tywin is the biggest badass on television to be sure, but some things have to be kept sacred.
At least they killed Ros this year.