Serpent_Nirvana you have very decent and well thought out points, thank you for posting!
As far as health, I think in another thread it was mentioned that instead of the judges necessarily handling each animal, the owners could handle them, and show the judges the belly colour, markings, and personality of the snake in question.
Also, health checks would be mandatory at the door, listening for respiratory distress, mites and other signs of illness before the animals are even let into the venue would be a must, in my opinion, to help prevent the spread of disease and parasites.