Are you planning on making an actual game out of this? If it's a tabletop RPG, (like DnD, Shadowrun, etc.) I could probably make a basic prototype rule system. But I have a tendency to give up on things halfway through and picking them back up later, so I might not be the best person.
Saw this one from the stream. Brilliant work - a rather unique portrayal of Rainbow Dash. Haven't quite laid eyes upon another that resembles this. I look forward to seeing what you'll do with this world you're creating!