Thanks for sharing your rom hack. It looked interesting so I gave it a try, although unfortunately there are major early-game balance issues, like this:
This is the first Gym leader: Roxanne, with a Mega Aerodactyl that knows Earthquake, Ice Fang, and Wing Attack. Plus a Minior that knows Light Screen / Reflect and Acrobatics, and a third Pokémon that I don't know what it is because I couldn't get past the Aerodactyl.