I would be into New Jersey letting me release northern pine babies (which I totally don't have

). I don't get how a perfectly healthy captive bred snake, supplementing a threatened wild population, could adversely impact the environment. Maybe I should just reach out to the state and ask if they could give me some permissions. I would handle it from there.
As for hybridization of snakes, it doesn't bother me. I think it would be cool to make things that have never been done before. Subspecies intergrade all the time in the wild.
I personally think breeding my Florida blues with my marcianus (just got at Hamburg. Got a super pretty radix too) could produce some really pretty specimens. I'm not looking to make a fortune off of them. I just want to try something and see what happens. I'll sell what I can for dirt cheap and then release the rest. I'm not seeing a downside. There are plenty of minnows to eat and our snake population went from me seeing a garter snake once a week, to me not seeing one in 8 years.