Inconsistencies/contradictions that detracted from the show?
1) Katey Sagal's numerous absences. To unfamiliar viewers it could look like the mother wasn't in the picture. I know she was pregnant at least once and had a miscarriage, but do what you have to do to film around that while including her.
2) Kelly's changing circle of friends. After she left high school she hung out with friends she supposed friends with in high school that we never saw.
3) Al's changing circle of friends. Before No Ma'am it was very inconsistent and the initially large number of members whittled down to a core group.
4) Officer Dan arresting Al numerous times (once as an FBI agent) before being his friend and even being a founding member of No Ma'am.
5) No explanation for how Al & Peg went to high school together in Chicago even though she was from & her parents still live in Wisconsin.
6) Jefferson used to be a spy but couldn't find a way to have a steady income without really working.
7) Al & Bud are the only remaining male Bundys, and later on they weren't.
8) What did Bud go to college for? He took courses in marketing, anthropology, literature, biology, and (in a dream at least) physics. After graduation he goes to work for the DMV and then is Kelly's agent. Maybe he got a degree in business or marketing?
(this signature was absent on picture day)