The turbo-lift scene with Riker and young Jean-Luc was added because the show was running short. The scene was written only the night before it was to be shot.
Originally, Data was going to be the Chief Science Officer on the Enterprise for Star Trek: La nouvelle génération (1987), like Spock was on the original Star Trek (1966), and wear a blue uniform. However, the color blue clashed with the android make-up and the idea was changed. Data was reassigned as the Chief Operations Officer and sported a gold uniform for all seven seasons (except "Future Imperfect" and Chain of Command, Part II (1992) which depict Data as the first officer).
This the first time since Encounter at Farpoint (1987) (where she wore the "miniskirt" uniform) that Counselor Troi is seen wearing a standard Starfleet uniform. The rest of the time up to this point, she wears either a gray bodysuit or a blue dress. Troi would not don the standard uniform again until Season 6's Chain of Command, Part I (1992).
Riker comments on the unlikelihood of a Ferengi ensign, which finally became a reality in Favor the Bold (1997).