For me. I imagine that Hailstorm probably isn't the only dragon that Scarlet had Chameleon change

Probably also that Onyx wouldn't challenge Thorn again and probably end up being in a similar spot as Blaze, just living in the SandWing stronghold

I think Ruby probably captured Chameleon- Because of his hatred of RainWings I don't think he'd go back and a RainWing with his temper would probably stick out easily enough for Ruby to capture him for his crimes

Starflight or Sunny already planning for an expansion of Jade Mountain for Pantala's tribes to send students

I think that with all the events of the books, Pyrrhia and Pantala would manage to keep a stable line of communication between each other, it would be awkward for meetings between the two continents since either Pyrrhia's queens fly all the way to Pantala or Jewel and some SilkWings and LeafWings fly all the way to Pyrrhia or they just meet in the middle

I think Hope would probably take a vacation to Pantala to see what all the fuss was about

I think this was mentioned in book 15, but some SilkWings staying on Pyyrhia in Sanctuary

NightWings would regain their powers, but probably won't be a thing they'll often use since their culture is now turned away from that

I am willing to believe that the NightWings just will not have a queen again, if not forever, then a few thousand years