A perfect family to me is a family that has arguments with each other, get on each other's nerves, laugh and bond, cry and have moments, but in the end they all still love one another unconditionally no matter the circumstances.
When a family member(s) deal with problems they sort it out and talk amongst one another. Some issues may take a little longer to cool down, but they end up figuring itout in the end.
I do know plenty of families like this. They are perfectly imperfect.