There are a lot of aspects in this debate, but I believe that the large scale exporation of ADULT ball pythons needs to stop. I'm ok with the occasional adult morph coming in and think that ch numbers need to be seriously looked at with the health of the population in mind.
If you want to find a new morph, buying gravid WC females is about the WORST and LEAST EFFECTIVE way to do it.
You'll find 10x the number of potential morphs by going through a ch shipment.
Also, there are more than enough fresh ch blood coming in to diversify the captive population I don't even consider that a factor.
Justin