Throwing memes into the culture does not mean it changed how TV shows work. Every scripted show out there is now serialized to some extent, that’s the influence of Hill Street. What did Seinfeld do that’s changed how every single TV show is made? Oh yeah, nothing. It didn’t really even change sit-coms very much. Not that influential.
Influential on the culture or on the TV business?
Hill Street Blues may very well have been more influential on the business. Don’t know enough about that to comment.