Definitely this beautiful and nerdy alteration in Hal 9000's The Rise Of Skywalker: Ascendant, where they change Leia's lightsaber color to purple because Carrie Fisher expressed a preference for it in a Force Awakens interview. *insert tears here*
Recently been going through all of the Kingdom of the Crystal Skull edits here. They all have their moments for sure, but I came across a random one I have never heard of called The City of the Gods. Its basically a super truncated version that keeps the pace up. I've seen a lot of people try their take on Indy and Spalko's initial conversation. Some pull it off, others not so much, and sometimes even the good ones have necessary continuity issues. But City of the Gods cuts it perfectly so as to have Spalko completely walk past Jones and move on with the plot. Nothing about it stands out as an obvious edit, but I laughed really hard at how easily it was done and how much better the scene flowed!