I loved the relationship between Priya and Archie. I think it was a very genuine representation of how people can come together, despite different upbringings, and form a strong friendship based on what they are currently going through. Archie and Priya grew up in completely different parts of India, but ended up together in California, united by their circumstances. They may not have ever had a relationship in India, but both express how they couldn't get by without one another as they navigated marriage, a new country, and raising children.
I think the nod to the blossoming relationship between the architect and Priya was also nice, but I suspect that it won't go anywhere now that the Shahs are moving back to Irvine.