Before we first played, a new tennis partner of mine asked me what "level" player I was; I had no answer since I've never had a tennis pro (who have criteria they use to evaluate these things) observe & then "grade" me. A few years ago when I attended a National Guitar Workshop I was asked a similar question about my level of playing. I was able to answer that a little better because the workshop brochure supplied some guidelines for identifying your own level. And I know there is a rigorous and fairly accurate process for determining what level of chess player someone is; this assists players in matching themselves with players at a similar level.
I'm thinking there's a business opportunity here (steal it if you like): Think of the benefits there could be if there were criteria or a brochure with guidelines or a rigorous process that could help each of us learn what our current level of communication was. Then, depending on our personal goals, we could seek out others below, at, or above our own level. And how about a shop where we could each go to get a communications "tune-up" to keep us operating at optimum level? There could even be niche businesses, just like the shops where they work on only domestic or foreign cars. So one shop would be for generalists in communication, another that just specializes in the use of words, another for listening or writing, etc.
How many levels? How to upgrade to a higher level? Who does the assessing? All good questions - your ideas?