Here's update preview #3. Once again, took some liberties with the backstory of Abyssinia, but they seem plausible to me. A catfolk bard or rogue is the perfect "face" character for any party.
When most ponies think of a cat, they imagine a cute little ball of fur that likes to chase mice or bat at yarn. They’ve probably never met the cat-folk of Abyssinia. At first glance these kitties look just like the house cats of Equestria, except for their enormous size--they’re as large as a full-grown pony. Once they stand up on their hind legs though, the average abyssinian easily stands a head taller than even a large stallion
Here's the 2nd update preview. There are a few liberties taken with the backstory. We're not really certain how long the hippogriffs have been exiled to Seaquestria, but it seems to be a minimum of 15 years based on Silverstream's history. The entire concept of additional colonies and a home continent is headcanon as well.
Now that true-blooded hippogriffs are an established species entirely separate from griffons and ponies, I may eventually split up the hippogriffs into a couple of subraces. Maybe there's an arctic hippogriff subrace with cold-based magic, or a desert subrace with fire-based magic. What do you think?