IMO, I would prefer that people didn't cross breed, why? Because some people that do, and have trouble selling the offspring try and palm them off as one full species or another, rather than crosses, now I haven't got a problem with people doing this if they correctly and honestly represent the offspring, but I know for a fact that it doesn't always happen, and unfortunately alot of newbies to the hobby get mislead the most, which is a shame. I personaly wouldn't be interested in any of the crosses I have seen in Australia at present.
I know that cross breeding of different carpet pythons will happen lot more in the future with the newly available albino's, but in the main I am sure these will be correctly represented, as the offspring will be valuable animals, in fact I look forward to seeing what can be produced.
Neil