in regards to TV-tywin vs. book-tywin, i think the best thing about the former is Charles Dance, period. dude completely nailed Tywin and all his mannerisms, IMO
but i think it's natural with the nature of these characters that the more time you spend in their head, the more you relate to them - so when Tywin dies in the books, or hell even when Robb dies, it's not nearly as jarring as when PoV characters die (hell, even Aerys Oakheart's death made me sad, and he was a minor character - but we were him when he bit the bullet)
in the show, Robb's death will obviously have a much greater impact cause viewers have been off at war with him, instead of just hearing reports through catelyn. i think the same could happen with Tywin, since we've gotten to know him a lot better thru the new Arya scenes. i'm really hoping they keep in the twist of Tysha being a ***** that tywin hired, so then viewers can relate to what tyrion does
but i think it's natural with the nature of these characters that the more time you spend in their head, the more you relate to them - so when Tywin dies in the books, or hell even when Robb dies, it's not nearly as jarring as when PoV characters die (hell, even Aerys Oakheart's death made me sad, and he was a minor character - but we were him when he bit the bullet)
in the show, Robb's death will obviously have a much greater impact cause viewers have been off at war with him, instead of just hearing reports through catelyn. i think the same could happen with Tywin, since we've gotten to know him a lot better thru the new Arya scenes. i'm really hoping they keep in the twist of Tysha being a ***** that tywin hired, so then viewers can relate to what tyrion does