Here's a link to the video-

Intriguing I must say- I give you kudos for coming up with something NEW.
I guess the term Shift Ramps has taken on a new meaning?

I'm the kind of person that looks to see what can wrong, before I look to see what can go right. So, please don't be offended.
With the wide spread push for 1X >10 speed, I'm not sure how 5-6 speeds would sell.
5-6 may be enough for "casual" riders, but those riders will probably go to the big box store and buy an INEXPENSIVE 3x7 or similar.

What are the ratios of the available gears?

How quick are the shifts compared to "conventional" DER systems?

Would the wide gears tend to collect pebbles & other debris too easily?