I'm starting to think you and your ideas are a stone waste of time and money. If the plants with the enzyme are no more dangerous than the ones without, then we're going to spend a bunch of money on R&D, more to cultivate a seed crop, and them some more to plant it, and after all that not get anyone to set fire to themselves.
No doubt something more subtle will be used ~ for instance, an enzyme that turns THC into chocolate when baked at 350 degrees.