Make it simple, but significant

But we're now at: 1. Alicent misunderstood Viserys' last words to put Aegon on the throne despite the fact that had been her goal for decades at that point to sand her edges down

2. Criston Cole didn't mean to kill Lyman Beesbury he just pushed him too hard and bonked his head and now he's dead, whoops!

3. The above fight over Shipbreaker Bay which as stated above, I actually like this adaptational choice

4. Butchering (pun intended) Blood & Cheese by making it an ope they were supposed to kill Aemond not Jaehaerys so Daemon seems I guess like slightly less of a monster but it's fine because nobody besides Aegon seems to care

5. Combining Nettles and Rhaena but now making Sheepstealer's arrival at the Battle of the Gullet unplanned and therefore leading to Jace's death.

6. Gods only knows how they're going to land the plane with Rhaenyra and Alicent's "plan" to take King's Landing compared to it being a clever strategic maneuver on Daemon's part in the book.