Looking at this down the other end of the spyglass, would you favour any restrictions at all on electric bikes? (Sorry if you have mentioned this before.)
I've made my position fairly clear on several occasions.
Based on my experience of using one to commute for a couple of years (until an ex-copper knocked me off it and Cheshire police closed ranks around her).
My view is the 15mph limit should be completely removed and the 250w limit left in place which means the speed is like the speed on most other things and limited by available power.
Realistically this means the bikes *might* on a good day hit 20mph but more importantly they don't hit a brick wall when you try to accelerate past something, i.e. they're predictable.
I also think a throttle should be legal on all of them rather than just the old ones, i.e. you shouldn't be forced to peddle to make them go - it's pointless anyway all it really means is you need to turn the peddles with your feet, no need to press, no need to match the bikes speed. Just idly spin them.
For the class above those I think they should dispense with registration, licensing and MOT's (I'm happy to keep the insurance requirement though).
As they stand if you're at the point where you can legally ride one then you'd be better off with a proper motorbike.
I also think allowing sub 30mph quadricycles to be used on limited licenses would be a good thing.
Overall though it's the 250w version and the two changes I'd like to see that interest me.
They're based on over 20,000 miles of experience using one for commuting.
The rest is more about my belief we need to get people out of cars and to do so requires realistic alternatives otherwise why not just "car"?