I do catch your drift! I'm always a little leary of that, only because... it sucks to give a new muse a fresh voice and then be turned down for the game, for any reason. On the other hand, some people can do that really easily, so... YMMV. I think the easiest route to go is to decide what you want from the app. Do you want to know the character? Their voice, etc. And then cater your app to fit your needs.