Mmm how would you police a more restrictive policy on fireworks...
1/ You need a licence, meaning the purchaser is registered with the licencing body AND with the seller of the fireworks.
2/ To obtain this licence you'd need to prove you are:
i/ over 25
ii/ have a suitable venue over a certain size, over a certain distance from main roads and built up areas
iii/ appropriate insurance for your event
iv/ have attended a safety course for firework use and obtained a current certificate
3/ You have to advertise your event in several public locations/publications 14 days in advance of the event so that others can avoid.
4/ You, the licence holder, are responsible for the fireworks you purchase, if those fireworks are found in the possession of someone not named on the licence then you AND THEY are breaking the law.
That should be sufficient to put a stop to the majority of daytime, malicious, stupid and dangerous use of fireworks, whilst still permitting the use of fireworks safely, by suitably qualified persons, at suitable locations.