Wow. I'm not even sure how I'd begin to put something like this together. I think it's a very interesting topic, but I'm not sure if I'll be able to do it. I'm too far away to be able to travel to various places and get samples of people speaking, and I'm not sure how much research has been done on the specific changes of accents over time. There might be articles out there, though. It's something I've never really thought about so I haven't done any research. I'll keep my eyes open since it's an interesting idea.