This is something I kinda miss from the days of Bink Video in the 2000s, a lot of games had the option to replay cutscenes; or you could just download the Bink player and go into the files.
A lot of the cutscenes in BG3 (and other games) do have choices for the player. Do you think they should be included too? I'd imagine the game would save which choice you picked and what the outcome of any roll was, and replay the same thing. Potentially the question then becomes where do you draw the line between a conversation and a cutscene