If the writers ever let Gilda have a return in season 3, they should definitely make this be the lesson that is learned at the end. I always found it was rather anti-climactic how the problem with Gilda was solved.
That is almost exactly the same conversation I had with the little kids I was teaching at Sunday school. The book was The Butter Battle Book. I think that Dr. Suess and My Little Pony really go hand in hand.