I haven’t read the whole thread (don’t shoot me!), but I think the following.
Public transport, unless you live in a big city it’s normally crap. I used to live in Nottinghamshire when I was growing up, our town only had a college that did btecs etc and I wanted to study a-level. I had to cycle for 15 minutes to get to the right bus stop, I then took two buses, the first around 15 minutes and the second 40 minutes, I then had a ten minute cycle the other end. It shouldn’t take that long just to get to your nearest suitable college.
Housing, why is it still mainly houses? Flats take up less room, cheaper to build and cheaper to insulate well. I live in a flat thats in an ex commercial building, it isn’t huge but it’s certainly big enough for me and my son. We do not need to live in houses.
Food, if you buy it, eat it! There was a recent thread where people were purposely over stocking their cupboards. I make a list on a Friday night, order it and it arrives Monday evening, we eat virtually everything apart from the odd bit that my son leaves on his plate. I don’t have a supermarket in walking distance of my flat, we do have a little sainsburys local but virtually every fruit and veg item in there comes in a plastic bag.
Diet as well as not throwing food etc. We can be more seasonal, I’m an almost vegan (I do eat eggs, but no meat or dairy), I mainly eat british grown in season fruit and veg. I know for a lot of people cooking can be a scary thing, so we could provide decent access to cooking lessons for all.
On the topic of food (again, I know) I would personally be a fan of all animal products being highly taxed. No one needs to eat meat on a daily basis, roasting one chicken a week would give a family a decent amount of meat.
Clothing I hate the primark effect and disposable fashion. My son is four and wearing a top that would have been about £30 new, but he’s the third child to own it, it isn’t misshapen, faded etc. I do buy him some new clothes, but generally I go second hand. Clothing shouldn’t be cheap, the UK used to make clothes but people want huge wardrobes full of cheap tat now, rather than a small number of good quality items. I don’t have a great deal of clothes, but what I have is decent quality so it lasts me a long time.