For the third movie, I want a scene where Sherlock introduced John to The Family (+Tewksbury), and John was all dumbstruck to meet them (powerful government official, influential leader of underground female organisation, youngest and most respectable lord, and the most brilliant Holmes despite being the youngest), and perhaps a little nervous too because we all know Sherlock would be too emotionally-constipated to help, only for Eudoria to ease up the tension by saying:

“So, this is your boy, Sherlock. Very nice to meet you, Doctor Watson.”