This is to the experts, Ethan, Frank, etc.
Instead of cutting into triangles to make a superchunk, wouldn't cutting into squares provide better results?
A normal superchunk at its thickest point is 17" and this effectively reduces to 0", but a square at it's thickest point is also 17", but this only reduces to 12". It has more surface area at a constant 12" thickness.
Also if you turn the square around and make use of the airgap, wouldn't that further improve its performance?
The only downsides I can see in both cases is that it protrudes further into the room (bad in small spaces) and doesn't extend as far along the walls.
...Just throwing the idea out there.