Thats actually looks a decent way of doing it. A
thread on the mtb section has a pic with an elevated chainstay bike which to me is another way around splitting chainstays for beltdrives.
I actually like to see 'concept' bikes, at least ones that have actually been made and not just exist as a 3D computer model. More in a hope that someone one day may actually come up with an idea that will eventually benefit us all. First road bike I ever had came witha
5 speed downtube shifter. Things have moved on a bit since then.