For me, it is mostly for the aesthetics, but I think it would solve a lot of the concerns about having too much power for the current brakes. I know I'm not at a point now where I'd have to worry about it right now, but I think having superior brakes would be a good idea for anyone who is getting a moped to go fast.
The reason I'm thinking about this is because I had a friend knock down his fence and brake his nose because of bad brakes. The bike was messed up too. At least he was in his own back yard, and not in traffic.
If anyone is in a motorcycle shop, keep your eyes peeled, and check out some of the smaller stuff. It may keep someone with a nice, fast ped from smearing themselves across the pavement.