I need ideas on how to teach form the April 2012 Conference talk The Laborers in the Vineyard

I taught this lesson in June. Here is my outline:
1. Introduction
a. Have someone read the parable in Matthew 20:1-15
b. Who is the intended audience for this talk?
c. Why do you think Elder Holland chose this message/parable?
d. What is in this message for you?
e. Read Elder Holland’s explanation (Quote 1)
f. Ask and post the question, “What can we learn about God’s character from this parable?”
g. Write attributes of the Lord on the board, and add to it throughout lesson.
2. Main Points
a. Envy is bad. (Quote 2, 3)
b. Don’t dwell on old issues or grievances. (Quote 4)
c. God is merciful. (Quote 5)
i. How is this parable about the Atonement?
ii. What is grace? (BD Grace)
3. Conclusion
a. Does it matter which hour you begin laboring?
i. (Quote 6)
ii. D&C 59:23
iii. Very end of talk, “Enjoy the fellowship of His labor.”
b. Final quote and testimony
“I do not know who in this vast audience today may need to hear the message of forgiveness inherent in this parable, but however late you think you are, however many chances you think you have missed, however many mistakes you feel you have made or talents you think you don’t have, or however far from home and family and God you feel you have traveled, I testify that you have not traveled beyond the reach of divine love. It is not possible for you to sink lower than the infinite light of Christ’s Atonement shines.
Whether you are not yet of our faith or were with us once and have not remained, there is nothing in either case that you have done that cannot be undone. There is no problem which you cannot overcome. There is no dream that in the unfolding of time and eternity cannot yet be realized. Even if you feel you are the lost and last laborer of the eleventh hour, the Lord of the vineyard still stands beckoning. “Come boldly [to] the throne of grace,” and fall at the feet of the Holy One of Israel. Come and feast “without money and without price” at the table of the Lord. . . . It is never too late so long as the Master of the vineyard says there is time. Please listen to the prompting of the Holy Spirit telling you right now, this very moment, that you should accept the atoning gift of the Lord Jesus Christ and enjoy the fellowship of His labor. Don’t delay. It’s getting late.”
 
Quote 1
When reading this parable . . . Surely never had such compassion been seen in all their working days.

Quote 4
The formula of faith is . . . through the day.

Quote 2
As the householder in the parable tells . . . because I choose to be kind?”

Quote 3
May I plead with us not to be . . . It is a happy way to live.

Quote 5
This parable—like all parables—is not . . . often feel they don’t deserve it.

Quote 6
My beloved brothers and sisters, to those of you . . . which you got there.

Ask if anyone would like some chocolate. If they do, pass out slips of paper randomly to each student that say: “Now,” “In 5 minutes,” “In 10 minutes,” “In 15 minutes,” “In 20 minutes” (I don’t suggest going past 20 minutes, as it gets pretty tiring).
Give them a simple (but weight-bearing) task to do (e.g holding a can above their head). They start the task at their appointed time (whatever is written on their slip of paper).
After the last group (the “20 minute” group) begins, let them go for 30 seconds or so, then tell them their time is up.
Tell them you will give them their chocolate and pass out a chocolate coin to each student, beginning with the last and ending with the first.

Ask each group how they feel about their work and their reward. If they didn’t know that others were getting the same payment, would they feel the same? Why the difference?

[While you’re waiting for the object lesson to play out, discuss some other passages in the chapter:
Note passage in v.13-14 with JST (“suffer children”)
Rich young man – v.16-22 ]