With such a set of necessary data, it is safe to say that 99% of victims will never get their money back.
I hate to say it, but I think 99% is too low an estimate. I don't think anyone is going to get their funds back no matter how many documents they submit or how long they wait. That statement might seem to be a glimmer of hope for those who had money on Livecoin at the time of the supposed hack, but I wouldn't hand over any personal information to them at this point.
It'll be interesting to see how this all plays out, though I suspect I already know what the outcome is going to be.