This is really ingenious. But is there a belt wear issue when the belt is misaligned front to back?
I remember reading that, when Harley Davidson first experimented with final belt drive, the engineers noticed that from Harleys had poorly controlled alignment between the front and rear sprockets, right from the factory. It was never an issue when they were running chains, which tolerated misalignment very well, but became an issue when they switched to belt drive, which did not tolerate misalignment.