Beginner? Intermediate? Expert?
General mountain dulcimer or music discussions
Ken, it would indeed be nice if everyone could adopt a common set of definitions of these terms. If this discussion begins the process whereby such an agreement could be made, you have done the dulcimer world a great service.
Let me complicate things a bit.
There are at least two other terms commonly used in this context: novice and advanced. In fact, I think "advanced" is much more commonly used than "expert." One might still be a student and be "advanced," but your definition of "expert" is what most of us would call a professional. I doubt you will see a workshop advertised for the "expert" level,but you might see it for the "advanced" level.
One reason this issue is complicated and confusing is that although some people come to the dulcimer with no prior experience on any musical instrument, others come as advanced players on other instruments. I was able to tune and change strings before ever holding a dulcimer because I had beenplaying guitars, mandolins,ukuleles and the like for decades. And I could probably play six tunes from memory within a couple of hours of getting my first dulcimer. That ability was not due to some natural gift I have, for believe me, I am not naturally gifted, but simply that I had been playing so many other stringed instruments that I was already familiar with how to play. And the fact that I had read (perhaps a dozen times) your essay"I Just got a Mountain Dulcimer, Now What?" over on ED meant that I was familiar with MD terminology even though I had never held one before. About a month after getting my first dulcimer I attended a festival thinking I was a beginner but was told by people at my first workshop that I was at least intermediate and perhaps even advanced. They were wrong, of course. My knowledge of the fretboard was still in its infancy, for example. But they based that opinion on my comfort fretting, strumming and picking notes and chords. I guess my only point is that any serious definition of these terms for "levels" of playing has to account for those whose technique might be advanced but whose understanding of the instrument is still at a beginner level. In fact, after almost four years I probablystill fit that description. (Maybe the term "novice" could be defined in such a way as to include those new to the dulcimer but familiar with other fretted instruments.)
My only real quarrel with your definition of terms, though, is the insistence that one must be equally familiar with all styles of dulcimer play. Is it not possible for someone to be an expert noter/drone player who knows nothing about chords? Is it not possible to be an expert modern chord player who knows nothing about noter technique? One would not demand that an expert blues guitarist also know how to play classical guitar or that the double bass player in an orchestra also know how to play bluegrass bass.

And I have yet to name my baritone dulcimer, though the lower range might indicate a male voicing. I'm thinking Otis.