While the first half of Ephesians is has a big-picture, doctrinal orientation, the second half of the letter focuses on practical applications. Paul has worked to develop the theme of unity in Ephesians 1 - 3. Now he explains how that unity can be achieved.
Conflict is a fact of life.
That's a sure recipe for conflict. Instead, put two very mellow people together who are very much the same. The purpose here is not to avoid conflict, but to learn how to deal with it so that unity might prevail. We've been called to follow Jesus, to be like him. I have two big brass belt buckles.