Going to go ahead and jump in here to voice my displeasure as well. I can't get over how monumentally awful the resolution for Jaime and Cersei was. I don't think it could have been done any worse, outside of them lovingly sailing away to be a happy family. Euron was such a dud the entire series too, and the rushed nature of these past two seasons just exacerbates the issues with him. Not to mention, Yara just totally disappeared.
The way everything unfolded with Dany was just a gut punch too. Not in the way they wanted either. Everything was so ridiculously easy, and it made her decision to burn it all seem utterly ridiculous. Mad Queen Dany isn't necessarily a bad thing (even if I find it trite and boring) but her going mad like this... boy howdy did it not work for me.
I can't imagine the books ever coming close to being like the show, in fact I find it kind of impossible, so they aren't really ruined for me. The show on the other hand... it makes me so sad. The actors, the cinematography, the direction, the music... so much is being done at their A game to deliver some of the most tepid and poorly thought out episodes of television ever. It's heartbreaking in some ways.