Wow. Your graphics need improving, but it seems as if you have a good start.
And no, you're not the first person who had a Nuzlocke Mode built in. I was planning on putting it in my game, and I got the idea from a game I saw a year ago who had the mode (don't remember which game it was, or whether it exists anymore).
How long have you guys been working on this? Seems like you have a huge team.