My thoughts as a car driver, biker and cyclist :-
1) Motorised/Powered vehicles like e-bikes and e-scooters (if ever made road legal) should be registered and insured. Plus there should be strict speed/power limits on them. If they're exceeded they should be subject to the same regulations, licensing as cars and motorbikes.
2) Police need to actually make an effort to crack down and prosecute those caught breaking the law by riding on pavements (whether pedal or e-bikes) or flouting speed/power retrictions.
3) Pedal bikes shouldn't be subject to the same regulations/restrictions as electrically powered vehicles like ebikes, escooters, etc.
To my mind point 2 is the biggest problem. I've never seen police make any effort to stop those who are clearly breaking the law by riding on pavements. Likewise I've never seen anyone riding an e-scooter on the road, which is currently illegal, stopped by the police. Plus I've been overtaken at 30-40mph by pedal ebikes which are clearly unrestricted.