As for me, this issue is now very important, as more and more bounty campaigns are requesting the passage of identification. But what if it becomes a generally accepted rule? Would you not send documents and participate in bounty companies at all?
I think that this will never become a generally accepted rule.
The principle of crypto-currency is decentralization.
If all investors start to send their personal data - this will be the end of the whole system.
It will be very bad. But, I'm sure that this will not happen.