Brencud, a very thoughtful post but you forget that some of us use our cars to make a living. The issue of bollards etc has been addressed before (search old posts).
As for the nurseries you mentioned, people should not park on the zig zags outside Fairlawn but still do. Some people just dont care however they are a small minority. The same with the one way contravenes.
I would hate to have my life become more complicated due to a very small minority. As I have said before, the more people that get reported, the more chance of them being prosecuted and hopefully convinced that driving like a Richard Head is not a good idea.