I don't see where's that even relevant? You just see the transaction, until they mesh it. You don't know who and there is no accountability if there's abuse.

It's the preferred method of payment for scammers, so visibility means absolutely nothing.

Reminder that 51% were even possible in the past. See https://en.wikipedia.org/wiki/GHash.io

Seeing the transactions weren't a solution then and aren't a solution now.