After a lot of reading here and elsewhere, as well as riding many, many miles with the ladywife on her electric bike, I find myself tending to agree with either a lower assist limit or keeping the current one. Anything with more assisted speed is becoming a motorbike. If you want to go fast, get a Honda or perhaps a Kwacker.
I think there's a huge difference between a motorbike and a bicycle (even an electric one) - probably at least 80kg
If you commute any distance you can soon get close to an average of 20mph with peaks of near 30mph.
The 15mph cut off made my ebike debateably useful - although being able to defeat it due to a "bug" in the software enhanced it's value no end (even if it was only for short periods).
My car needed replacing so I've now bought an EV. Whilst I *have* to own a car I don't *have* to own a bicycle - particularly one that doesn't suit my long commute.
A 20-25mph assisted bicycle along with the simplicity it brings regarding use would be an ideal replacement for my car (for commuting).
A 15 mph bicycle I've decided isn't.
So as a society we choose the direction and it seems to me that direction is cars.
When even cyclists are hostile to ebikes and escooters apparently preferring folk to use cars you've got to ask yourself what exactly is their take on the future of transport.
I currently own 3 'broken' bikes and no working bikes.
TBH I'm currently of the opinion I can't be bothered fixing them. I get plenty of exercise in other ways and I value my time too much to spend it riding a bike on a journey I can do in better ways.