I think what this idea needs is someone willing to carry it through, and if you're willing to work in the system I know best, then I'd be willing to run such an RP. I'll get to work on an idea for a Fallout adventure, if you're interested, then you can pm me for more details. Along with any questions you have, I'd like to hear what you're looking for specifically: what your character likes to do, and what you'd like to happen to them.