This is veering from the topic at hand.
Yes, God's love is to be displayed. The community of saints on earth (whom Paul is referring to) needs edification because it is still enduring the sinful effects of the world, but this in no way extends to depending on one another when it comes time to stand before an Almighty God.
Christ's death alone has provided the righteousness needed to stand in the day of Judgment.
Yes, and that's why we ask the saints in heaven to edify and encourage us -- because they no longer endure the sins of the world. And Christ is the Lamb of God, who takes away the sins of the world. So they, who are in heaven, help us to endure.