One PRO of Satoshi's identity/story becoming known is that I would then know who really created BTC and that is good because I would like to know
The biggest PRO of that would be that I know that Satoshi is NOT the CIA and it would shut that whole theory down. It wouldn't be too bad to disprove that one.
I don't think Satoshi should be exposed against his will but I hope that one day he will come out and tell us everything from his inspiration to his motives, including his motives to have remained anonymous all this time.
Satoshi has crossed my mind lately actually.
IIRC Theymos (someone?) said some time ago that he has a bunch more Satoshi emails/PMs that he would release in a couple years and I think that time might be coming up relatively soon. Maybe 2019 but I'm not sure.
I will look and see if I can find some reference.
Edit:
I've never read Satoshi's PMs.
Can't find it, maybe I remember something wrong.