So with darkNXT out there has anyone thought already about mining it?

I have some thoughts on how to do this from the technical standpoint but don't really know if it's profitable. Can someone perhaps provide rough estimates on number of darkNXT accounts and their total amount?
~250M @ 1000+ accounts.
Edit: U should start from one with almost 50M on it.
LOL, do I understand that right....250M Nxt are lost (at-least fore now)?
How do you know they are lost and not just send to the account number as "offline wallet"?