Traditional role of the mountain dulcimer.
General mountain dulcimer or music discussions
It is interesting to think that at a time when European antecedents were 'traditional,' at one point the dulcimer was probably considered an innovative new thing. I wonder if there were once epinette players who saw new fancy zitters shaped like violins with heart shaped soundholes and looked down on them for not being traditional.
Your real question is too big for me to answer, but I'm sure some folks on here definitely could. If you havent already I recommend joining the Dulcimer History group
https://fotmd.com/ken-longfield/group/38/mountain-dulcimer-history-traditions
and the Dulcimer Ancestors group
https://fotmd.com/strumelia/group/14/dulcimer-ancestors
Imagining epinette players scoffing at the newfangled zitters brings a smile! If you have any more insights or fun anecdotes, feel free to share!

It also didnt help anything that my first dulcimer had a 29" vsl. Still, I played it and got used to big stretches and then I started making dulcimers with smaller VSLs. I was able to make much bigger stretches much more comfortably.