I came across interesting project on kickstarter:
https://www.kickstarter.com/projects/1401606907/nuseti-the-mountain-bike-of-the-futureThe bike is equipped with a planetary gearbox and fully enclosed in the frame drivetrain elements (chainring, chain and sprocket).
I would appreciate such system during bikepacking trips or Tour Divide racing.
It looks like gear range is spot on. There is no information about the weight of the gearbox but I hope that it is in the middle of Rohloff speedhub and Pinion P1.
I've already backed the project because it looks very promising.
Any thoughts?