I think perhaps these cassettes with very large sprockets and lots of gears could be useful for recumbents, although I am sure this is the last thing the designers had on their minds!
I have a few reasons for thinking this:
-Recumbents benefit from having low gears, but using very small chainrings to achieve this can result can result in undesirable flex in the frame. This is because using a small chainring results in high chain tension. Achieving the same gear ratio with a larger chainring and larger sprocket avoids this. I find that the feel of my recumbent changes a lot when I shift from the 32 to 22 tooth chainring - it becomes noticeably mushy.
-Cross-chaining is no problem on a recumbent, as the chain is so long.
-There is no reason not to offset the rear wheel on a recumbent. I think on an upright offsetting the frame too much could give bad chainline or cause heel clearance problems. On a recumbent neither of these is a problem.
However, from my point of view it is a shame that they have managed to have lots of gears by making everything thinner. I would prefer that the sprockets were the thickness of 8 or 9 speed, and the hub were made proportionately wider to fit them all in. The frame could then be offset to give an undished wheel.