New track markings are good especially now I have obliterated a hole in the one at end of the straight with my appalling driving skills

apologies!
I think the only improvement could be to find a way to introduce some curves etc to make some of the apex's a tad less harsh for less able drivers.
I think your definitely on the right lines Alec, heard more than one person last night talking about the old tracks that used to be set out and how good they were.