The next two books are essentially spoiled for a lot of them now, since they know what's going to happen, it's just going to take 7000+ pages to get there, as opposed to having no idea what was going to happen up until now. And with the way the show executed it that just kind of butchers the excitement more.
I used to think like this, but honestly, now I'm even more excited.
1. Starting with the major beats: Dany attacks KL, Jon kills Dany, Bran becomes king. Drogon still isn't the size he is in the show, so if he doesn't grow drastically, it's likely that the major damage to KL will come from them setting off the wildfire caches that are still all over the city - the ones Tyrion knows about. Which changes the dynamics somewhat, and makes all three of their stories much more interesting. We still don't know how the heck Bran becomes King, and where he will be seated. Maybe there is a major council, or maybe everyone bows to the Greenseer King who defeated The Others wherever he goes...
2. Jaime and Cersei die in embrace - fine, whatever. Probably not from a wall falling down on them. Maybe not in King's Landing at all.
3. The politics - the show made it seem like the rest of Westeros is a bunch of pawns waiting to be moved around in seasons 7 and 8. But this in not the case. The Tyrells, the Dornish, the Golden Company faction with [book-only character], and the Ironborn (with one magic-wielding Ironborn - idk if he was in the show at all, his name is Euron
) are all moving and plotting to fuck everyone's shit up, which will almost certainly drastically change the situation in King's Landing by the time Dany comes knocking.
4. The entire northern ice magic plot. We haven't seen how the Wall falls in the books. We seriously haven't seen how The Others are actually defeated. The Long Night will not be an inconveniently dark December afternoon.
5. Character details, logistics details. This is where everything gets even more fuzzy.
Jon doesn't get to just wake up and be normal, with a few cute scars on his torso. His story almost definitely ends somewhere in the North, like the show said, and the other Stark endings seem logical, more or less. The show ends in a super progressive way, with none of the Stark kids gaining permanent love matches - but this doesn't fly in Westeros, and especially not with characters who have already been shown to dream about marriage and family. Expect love matches for Sansa and Jon at the very least. I wanna see Jon with Val in the end
and speaking of marriage, the question of political marriage between Jon and Dany will be on the table for a lot longer than it was in the show, unless she matches up with someone else before he becomes Lord Stark of Winterfell.
Tyrion literally isn't the same guy already in book 5, so his character path to redemption as hand of the King is still unclear.
How do Dany's armies and dragons get out of Westeros after her death? Idk, sure isn't by offering a crappy deal to GW and Drogon reaching an understanding of things and getting the fuck out on his own.
What is the Night Watch watching in the end?
6. The other magical details. So many questions about the magical nature of the seasons, fire magic, weirwood magic, ancient legends, they will likely not be answered completely in the books, but they will certainly receive more consideration. I look at the ancient prophecies and legends through the lens of
mythical astronomy, I think that's likely the right way of looking at Azor Ahai and everything else, but for everyone who wants to debate about who really was Azor Ahai reborn and how these different things work, George is likely going to be inserting some clever nuggets all throughout the next two books. The red priests aren't going to fade away because "their mission is done" like they did in the show.