Revisit low scoring dances

In the final next year, how about if all the couples have to choose one of their lowest scoring dances in order to show the improvement/progress that they have made. I'm thinking of dances that they would have done within the first three weeks - of course their lowest score could come at any point in the competition?

For example, I think it would have been great to have seen Kara's Cha Cha Cha, Matt's Quickstep and Pamela's Jive.

It would challenge the pros and their celebs and allow the judges and viewers to make comparisons.