Well, whether Bonsai material 'wastelands' exist or not, I am certainly not in one. Well started tridents in one gallons cans are in the $single-digits at George's place, I am surrounded by wholesale and retail landscape nurseries, and the Internet is a wonderful thing, so needing to multiply my existing trees is not an issue.
The more I think about it, the more I tend to agree with the sentiment that a layer probably isn't worth the effort (or lost time) in this case. I also think chopping off and mulching 80-90% of this tree would also serve to remind me the next time I'm shopping . . . Like I said, a "teachable moment."
I'll post my next move soon.