Hi Ben and greetings from Australia.
I’m an intermediate player and have been a member for 18 months now so feel like I can complain (!) You use the terms “position” and “shape” rather confusingly. “Position” seems to me like it ought to refer to the location up or down the neck, while “Shape” should refer to the pattern of your fingers when pressed into a chord. You use the term “X” and “Y” for these shapes but I cannot see an x or a y in them. Other teachers (Ross Nickerson and Janet Davis) call them the “F shape” and “D shape” since that’s pretty much the first chords on the neck that these shapes make (then they get different names as they travel up the neck - hmmm very confusing)
Also, many books use X and Y to refer to the right hand positions that make the strings sound brighter or more mellow.
Anyway, this is all ancient history for me since I have gotten past the 5th fret a long time ago.
On a positive note - you are by far the best banjo teacher I have experienced and I have used a lot of books and paid for a lot of web-based instruction over the years. Keep up the great work.
Grahame