Bob Saget's actual daughters
https://imgproxy-ohio.amomama.xyz/SceN6Egp0g0AxNwydcTub5-I_SbzF38gZm3P3jbo2zY/fill/1200/0/no/1/aHR0cHM6Ly9jZG4uYW1vbWFtYS5jb20vYjMxZGUyMGM5MmIxMGI2NTBhNmViZmNkZTI0ODk2ZjI5ODk3MDExNTY2NjEyMjM4LmpwZz93aWR0aD0yMDE1JmhlaWdodD0zMDAw.webp
I've often heard the criticism that it would be implausible for a dark haired Jewish guy like Bob Saget to in real life, be the father of three blonde haired fair skinned girls. And you complicate that with their mother supposedly being of Greek heritage, once it was retconned to make Jesse's surname Katsopolis instead of Cochran to better align with John Stamos' actual Greek background.
Had a more traditionally "WASP"-looking actor like John Posey continued playing Danny Tanner beyond the failed pilot, would it have been more believable as DJ, Stephanie, and Michelle's father?
https://www.google.com/search?q=john+posey+full+house&tbm=isch&ved=2ahUKEwj02u2NnPHxAhVQKa0KHWFaBZwQ2-cCegQIABAA&oq=john+posey+full+house&gs_lcp=CgNpbWcQA1CsBViBDmDhD2gAcAB4AIABAIgBAJIBAJgBAKABAaoBC2d3cy13aXotaW1nwAEB&sclient=img&ei=zof2YPS7EdDStAXhtJXgCQ&bih=789&biw=1600