There exists certain bikes and usages where the current EN standard is not suitable, like velomobiles and delivery bikes and racing.
IMHO it should be possible to extend EN 15194 to for these vehicles and practices or at least make it possible to go beyond either the speed limit (for example velomobiles can easily go much faster than 25 km/h with only 250W) or power limit (delivery bikes would benefit from more power than 250W and at the same time be limitied to 25 km/h and still be quite useful and very "green" transport). This would not increase risk since velomobiles have quite a high speed from human power already, it is only limited when going uphill. The risk associated with delivery bikes would not be increased either as long as the speed is limited to 25 km/h. A simple liability insurance sticker could be an acceptable requirement for these "limited by one, but not the other" class vehicles.
For racing it should be allowed to use more power and higher speed but that will come when ebike racng becomes more common
