I'm open to ideas, so if you got some, fire them at me, and I'll see what I think about them. Right now, I'm on the planning phase, as I want to first make the layout of the new region, as well as naming the region. I will be using Pokémon Pearl for the base, and plan on making 2 version, similar to how they're done officially. I've tried making GBA Pokémon ROM hacks, but I'd end up breaking them pretty badly, so I'm hoping I can get some people together to help me out with this.
Honestly not sure if ROM hacking is still big these days, but I've decided to try and make a ROM hack.