Totally agree that Chris and Hines were badly underscored.
I'd like to see Sugar Ray stay around for a while longer. He is improving and he's thoroughly enjoying and appreciating the experience.
As for Mark, he clearly wants to choreograph for Broadway and he'll probably be quite good at it, but he is not teaching or choreographing ballroom. Re his comment about his partner being 22 and his wanting their dance to be younger and fresher, I would remind him that in Harry Potter and the Goblet of Fire, the characters and actors were younger and fresher than Mark or Chelsie and when they waltzed at the dance, it was a true waltz.