Oh hey, I've seen this before.
>>23548393I'd say because the Unova dragons appear as statues in Parfum Palace, and because they never said where N went when he vanished, it's plausible for him to show up in Kalos.
For Zinnia, she speaks to the player about truth and ideals in the Delta Episode, is a Draconid dragon master (who would surely know of other regions draconic myths) and because she left Hoenn on a journey as well. Also, perhaps coincidentally, her name mirrors AZ's (ZinniA).
Could tie into the AZOTH nonsense from ORAS, maybe? And let's face it the closes we're getting to BW3 is that godawful deviantart project with the trannies and maximum edge.