I'm still hoping for- but not expecting- a 33cc China Girl- at much lighter weight and much less noise- with the same kind of clutch start for the much lighter transportation and better rolling bikes of today.
The original motors were 50 ccs and just when new lighter frames and wheels had come along in the cycling world, the 66cc motor came out when guys were mostly using old cruisers with heavy steel wheels as builds.
Building for speed and power is fine, but there's nothing that's kept up with lighter bikes for shorter urban uses. The bikes and the motors went in opposite directions.
I'd also like to see lighter plastic tanks that fit a bottle cage or under the top bar of a diamond frame. A kit could weigh in at more like 10 or twelve pounds instead of 18.