Hi Brian,
I'm reluctant to revive this thread but felt it was important to follow through on your suggestion.
I tried your suggestion using Photoshop to stack 4 images (2 desaturated) as advised. I didn't care for the results because it simply made the image dark and heavy, and as you know my personal preferences tend to light and airy, and misty. However it was a great learning exercise for me because one day I would like to try stacking a macro image of a flower using different focus points (my understanding of what true focus stacking is used for).
Also since it will likely take me some time to be able to capture a misty mountain peak image that I actually like enough to dedicate to you I decided I will share an image that I took this summer that shows the layers you mentioned (a few instead of thousands) and a wide tonal range. It doesn't represent the dreamy scene I have in mind but it is misty and green. I processed one light for me, and one a little darker than usual to fit your tastes rather than mine.
Until another day...