Hey, I’m sorry to come off so negative.

It IS and interesting and creative take on a way to solve a problem that I’ve not seen before.

I do have one suggestion that might make it more appealing (assuming it could work to start with):

Right now you have it broken into 2 parts. As a result, it takes up just as much room as a regular cassette, because at some point you need room for the full width of both halves. What if you broke it up into 3 or more smaller parts? It would still need to take up the width of two of those parts, but they would be narrower. That would reduce the amount of space needed on the hub, which would be a true advantage.