Under 19mph? Parisians will stretch that as far as they can!
Of course it's easy to introduce such a limit in a small city like Paris, but in the huge size of London and many other cities it's impractical if applied to every road. What has been proposed a number of times is 20mph in all residential areas, but that wouldn't help e-bike commuters much,
In any case, I can't see the EU changing the pedelec 25kph limit just for the odd city that alters it's rules, since they already have the 45 kph S class for faster riding available to any EU country that wants to adopt it. Hardly any national governments do it seems, especially our UK one. That S class speed could keep up with present city traffic.