Bimandbam could you get planning for less bright lights mounted a little lower? What a pain if you can't! I assume you're allowed normal lighting in your yard area? If not then your planners are as batshit crazy as ours refused roof solar panels overlooking 50 acres land in valley with no other houses or roads!!? Pity if there's no alternative yard she can ride at which does. Yes, bringing in in the dark isn't great. I used to bring in 20 from 2 different fields with the help of 2 other people at 7:15pm in winter. It wasn't pleasant, but we had about 6 powerful torches and carried 1 each and left the others tied on to the fence. We always managed somehow!
I'd assume the DCs doing extra sports externally would End up having their lessons moved later by the provider? Otherwise all these leisure centres will lose revenue.
I totally agree the problems are greater than just needing an extra hour a day, but on the whole I think it would be good for most pupils, but I'm very happy with the idea of those with extenuating circumstances being excused. Tbh I get the impression the state school system is going down the plug hole like the NHS.
I think in general, things that could help are: more funding for schools, building more schools so DC don't have to get bussed out, making teaching a nice profession again, employing more teachers, cutting class sizes, having more discipline in class!!! making learning more fun by having longer days padded out with more drama, art, music, fun clubs, having sport every day to help tackle obesity & linked health issues, SEN provision being consistently good.... But I admit it's probably impossible to achieve.
Heh, maybe we should 'fine' that c*nt Donald Trump by making him pay for a new school every time he visits the UK!!?? 
I totally echo your statement about the sadness of our DC working to 75, no pension, not being able to afford a house (plus erosion of nationalised healthcare), but personally I'm very grateful my DC has the opportunity to stay longer hours at school to have some amazing experiences the I could not provide out of school.