I went through all of the Bembe, Rumba, and most of the Abakua a while back, and have been so busy these past few weeks that I couldn't spend the quality time studying the videos.. But, from my initial perusals, I learned several small things about the Bembe the leads that I had never considered and had not been shown before. The Rumba and Abakua are also filled with little gems I had not known to exist, as well as ways of looking at the interactions that make you go "ah" "hmmm"...
I agree... This is going to be a must in the arsenal of teaching tools for people who are serious about picking up traditional Cuban repertoire.