i'm no breeder (nor do i have any snake breeding knowledge) but i can say that i could not knowingly breed anything that has any kind of defect.
All Ball Python Morph's have a "defect"..it's what makes them look different..So to say you couldn't knowingly breed anything with a defect is your choice but it means you'd need to steer clear of all morphs all together.
When you've got 10,000 people trying to do the same thing, why would you want to be number 10,001? ~ Mark Cuban