Firstly, I dont dis-agree with your "rhythm " concept, but, if you really believe that, this is whats needed first( necessary ) for someone to follow, then maybe it highlites your lack of knowledge in partnership dancing ?. The whole premise of that, is based upon, initially , the " Hold, Frame and Poise " . Even if one has the most talented students ( and Ive had plenty of those recently ) they STILL need to develop those characteristics first, whether it be Salsa, Ballroom ,or any other partnership style, from the very beginning . Simplicity is a good thing , IF one has the correct tools to develop students. Ive lost count ,of how many " advanced ?" students Ive taught in the past 2yrs for e.g. whose foundational work was sadly lacking. So.... all the " rhythm " teaching in the world, would never have corrected those underlying problems. The whole concept of dancing "musically " is a very personal journey.How we all listen to any given song, it may have different "messages " for each of us, as it usually does. One cannot pigeon hole rhymical concepts to fit all . Theres always much talk about Tumbao, Bass, Conga and Timbales, and how dancers should adapt. . The problem is, that this a very complex musical system, and the average dancer ( and they by far, are in the majority ),will NEVER come to understand their applications.Thats not to say we should not teach them, but, as in dance ,"timing " is paramount . So in principle, I dont dis-agree with your initial rhythm concept, but ,I believe it needs to be used in concert, with the foundational aspects ,from the git-go ,not as a forethought . This is a separate issue.. The majority of " teachers ?" in salsa, have little or no professional training, and as far as musicians go, they are not trained dancers, so they will have a different "take ," on musical application to dance.This is a large part, of WHY you did not get satisfactory responses to your question.