You said in your original post that what you didn't like about the Volkl One was the leverage it put on your knees when it was on edge in cut up snow. I was skiing on Sidestashes--106. I gave them to my son and went to Bonafides and Automatic 117's, What I found with the 117's was the same thing you noticed--once our Sierra cement started to consolidate the leverage was bothersome--in my case not painful, but I started noticing give at my ankles making it harder to control the skis as they tried to bounce around--as if my boots were too loose or too soft--but I have stiff high boots, with stiff, snug liners (Intuition PW's). I never noticed that with the 106's. My point is that at least for me the excessive leverage kicks in somewhere over 110. I don't know if there is a ski in the mid 100's that meets your specs otherwise but if there is you might want to try it, if you haven't already. I suspect you'll still strike out as makers seem to be moving away from flat or full rockered powder skis. The old Cochise would have filled the bill but the new ones went back to camber underfoot.
Interesting thoughts. Maybe going to the 1-oh range would work—though I'm smaller than you (150#, 5'7" vs. 175#, 5'11 5/8"), so my cutoff for leverage issues may be lower (some have mentioned this has an effect).
I've been on three skis in that range:
179 cm 2014 Blizzard Peacemaker (104 mm)
180 cm 2014 Rossi Soul 7 (106 mm)
177 cm 2017 Nordica Vagabon (107 mm)
....but I can't recall if the leverage was an issue — I wasn't on them long enough.