As someone with 138cm height, All I ever wanted on a normal sized motor-bike is self-balancing.
So far my options to ride a normal size bike is to convert it to three-wheeler with after-market attachments(I'm not confident about the safety, Quality of such work), Going for a 3-wheel scooter like Peugeot Metropolis(Not really a bike).
Self-balancing bikes would make the dream come true for many like me.