... what persona would you develop and why?
I can see a few reasons that some might do this - though it is not palatable for most people. If you wanted to get inside someone's mind and try to motivate them this might make sense. Or in some cases you might be able to field 'inside' information about family or friends with a well conceived con. I can't say that it is particularly attractive to me, nor do I have any reason to do it. I have heard of some who have done so, and it is intriguing to me.
I am curious by nature. If you were to do such a thing, how would you proceed, and what would you hope to gain by playing the role? Have any done it? Did you actually achieve your intended goals?
Just curious tonight, and I guess, bored.
Jeff