The majority of the Tanner extended family returned in Fuller House, but several of them were much better in Full House. In the late '80s, ABC debuted its own take on family sitcoms, with the introduction of the non-traditional Tanner household. Despite a tragedy launching its events, Full House was fun and lighthearted, but it didn't mean that it shied away from tackling serious issues. While it was never a critical darling, the show was a ratings hit thanks to its realistic portrayal of the joys and difficulties of parenting. It also helped that the stories were told from both the perspectives of its parental figures and the children.

https://screenrant.com/fuller-house-characters-better-in-full-house/