Hi, the target countries are the european block (I am following that, although I am located in Switzerland).
I agree that going more than 25 MPH is crazy. I think even having assisted pedalling at speed above 12 MPH is too much.
I am not sure about their licensing like mopeds, although even the United Nations clearly defines every motor-assisted thing as a vehicle.
One of the many exceptions, the Japanese government decided since long time to ignore this calssificiation and bicycles with a motor, with some limitation in speed/power, are still bycicles.
I personally experienced the sidewalks of Tokyo (Japan) where walkers and e-bike regulary mix and I can claim that I think it works (slow dense flux, no need to enforce speed moderation, people density alone works surprisingly good).