2) Sera trying to be supportive when my elf dude admitted he was not handling all these elfy revelations very well.
This 
I mean my own elf dude was on good terms with her in the main game, so I should not be surprised. But her support to the Inquisitor was so sweet. And that scenes with the Jennies. And that awesome crossbow-arm.
And also:
1) Solas voice and the soundtrack flowing together. Everything bittersweet. Everything perfect. This guy wants to destroy the Inq's world yet everything he can feel his sadness, not anger.
2) Dorian's promising future.
3) Is that dear Aveline with short hair in the epilogue slideshow, with Varric ? oO
4) the evolution of the gameplay with the anchor. This made the game even more intense.
5) the crossroads look different depending on your race (elf or not). That is a delicate touch.
6) Little things, everywhere! The DA team put so much thoughts into this.