I've not totally lost interest in Aftermath itself. The ideas and plans are still very much in my head. It is true that I've lost some interest in the actual act of rom hacking. I think I really should have waited a bit to create the thread and post details. It was a bit premature.
I'm mostly working on plot details and pokemon designs, as well as a sprite comic that deals with literally everything that leads up to to the "end of the world". It's all ridiculously complicated and spans a period of about 50 years, so it's a bit time-consuming to get everything worked out in a way that makes sense. I'm a bit of a perfectionist, and the story is one of the most important things for me. That thread barely scratched the surface of the story. XD
Thanks for the offer, I'll keep it in mind. I will need some help when I get back to seriously working on it, but at the moment there isn't a lot I can think to do.