Marvin, you know my thoughts on this painting and I look forward to seeing Tim's. I only know Tim through this website and consequently am not as familiar with his thought process as I am yours (sorry to say)
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P.S. You may have received a email from me that was innappropriately named from someone called Suzanne. I'll explain later at a more convenient time.
To discuss pallettes as a critique from paintings requires a perceived goal - realistic color/values, dramatic or emotional enhancement, etc. Or just personal preferences. I will assume that personal references will be the criteria.
But to continue the thread regarding pallettes and students, I believe the Reilly pallette (or Mattleson) pallette offers a thorough understanding and utilization of color and value that will allow the students to manage the pallette instead of the pallette handling the students. If after they learn value, that seems to me to be the time to tackle new pallettes.
It's like learning to draw before you learn to paint.