First off, that be a twist. Second, do they come in fruity flavors? But from the start of Punk Hazard, there were some signs (and some hopeful speculation) of devil fruit experimentation. When there were centaurs and fauns/satryrs and harpies (oh my!) I had wondered if those were leftover experiments, and when we first saw Caesar as a gas, I had hoped that he was "stuck" in an induced logia form.
Well, that fell through with Law's appearance.. and for a time, my theory died horribly. Well, hoo-ray! my harebrained theory panned out. There was some kind of zoan testing in making the artificial fruit. Given the behaviors of the first two dragons, it could be possible that they slipped into the "awakened zoan" state like the Demon Guards of Impel Down. It's likely that the different dragons were different models created the same way. The one Momonosuke ate was untested, presumably because Caesar set off his bomb and prompted the staff to run for the hills.
What does this spell? It indicates that Vegapunk was really on to something, and sets the stage for some kind of explanation into the workings of Devil Fruits. Or, at least something BIG with the marines, especially now that they've gotten a little more ruthless with Akainu in charge.
Any questions, comments, concerns? (and I know full well it's hard to prove I didn't just think of the earlier theory now.. it just sounded stupid after Law showed up).