Tell me about Spotnoses, it almost seems like an enhancing gene?

[Ransack]

I've become interested in the Spotnose gene. My questions are simple, if you look on World of Ball Pythons for examples the gene seems to explode when combined with almost everything. Why does it seem to be not so popular gene? It leads me to believe that this isn't always the case and these are rare examples?

The gene seems to also be either a low expression or high expression type? Some single gene Spotnoses look like wild types ("Normals") with a mild head stamp while others are totally aberrant.

Let me know if you have experience thanks.