Its gear range is 350% though so ya its great you can fine tune to any "gearing" you want but you're confined within a certain relatively narrow range. The Shimano 8 speed internals are 307% for reference and then 14 speed Rohloff is somewhere in the 500s

I find the idea cool but I have no personal qualms with how the current internally hub gears work. A 13% gear change is fine by me.