Oh, it does depict real poly lifestyles. Those of the people on the show
But just like with monogamy, there is a lot of variety. One show cannot get across all of the variety.
That's why I don't think I would really change the show, my wish is for more, different shows. Different people, different situations. The more variety will be shown, the less people will think in terms of "a normal/average poly relationship..." because there isn't such a thing!
The people in the show are real, their situations are real, and it's good that people get to see them. I want more shows like this, and I'm hoping that they won't all follow the same model, so that the general public understands that neither do poly relationships.