That is an interesting design concept, and like most different ideas for mattresses, I'd like to try it some time.
However, in my personal zoned mattress experiments I haven't found it to work well. For me it seems to require that each zone be, not ballpark right, but EXACTLY right and I could never find that correct adjustment of zones.
Others on this forum have used a very soft shoulder area and said it worked for them but when I tried it, it just through my back out of wack.
I wonder what the key might be?
I'd like to hear from anyone who's experimented with zoning and what worked and didn't work for them.