>>18623509That main thing it would be nice for is so you could loan your game to someone (friend, sibling, whatever) and have them start their own without running the risk of losing your own file.
Unfortunately, multiple files would make it somewhat easy to abuse trading. Even if you couldn't trade between files, you could still get several copies of legendaries per game, and just do some trading around with others until you have everything you want.
That sounds great. Why don't we have this?