Thanks for the link to the Montiblanco circuit video Pete. I've never gone to a track I didn't like , respect, or at least want to come back to and continue learning on.
I don't ride a race pace. I ride - "If I hit that wall ;It's going to smart!" (Been there, done it,ouch, not recommended!)
IMO- You can get into enough trouble at a track day without going 10/10s into the corners lacking run off. It's still a balancing act, how fast do I want to go: Work on Monday.
Factor in a few friends who either are, on a good day,more skilled, have a faster machine down the straights, willing to take more chances,better tyres,
Playing that game on the street will end in tears.
More tracks are good thing.
.....even if they weren't designed with motorcycles in mind