I suppose by watching for crossovers is how we might eventually find what is all part of the same gene and what is just closely linked separate genes. I suspect that blue eyes, kinks, and spinning are all part of the same gene that makes the lesser complex, caramels (and cinnamon), and spiders respectively and can't be crossed out but certainly worth trying.

With the large number of ball python mutations we might eventually find some close linking of separate mutant genes. One speculation is that since it’s taken a long time to produce a true ghost (axanthic + hypomelanistic) that could indicate linking between those two recessive mutations. Maybe we'll need a crossover to make progress toward the double homozygous recessive true ghost. Once we have a crossover to pair two closely linked mutations it will make for some interesting breeding results in later generations.

A good question is why there appear to be so many different mutant variations of the blue eyed white snake gene (lesser, mojave, phantom, Vin Russo, mocha, hidden/dilute). Maybe these are separate but closely linked genes. But given the interactions they have with each other (producing white snakes generally) I'd also guess here that we are talking about the same gene without crossover potential. I think the hidden/dilute allele that pairs with lesser to make a platy is just like the other alleles except that it isn't visible by its self or even when homozygous.