This current Reiner is just my favorite in the series and seeing it on anime is very pleasing
Attack on Tittan did a scary great job with building its universe-expansion, thing most mangas do very poorly. I remember reading Claymore just to get frustrated over the fact the new continent was never displayed
Pretty sure Isayama said most recently his favourite character is Reiner.
The more his character has grown through the story, the more I love going back to that scene in season 2. It's especially great after seeing it connect to the iconic scene from ch.100 in the manga, which will be coming up soon in the anime.