I would be such a jaw-dropper for the community if this turned out to be legit...

I know, I know it is like 1:1000 probability (well at least this is what I give it) for that but still would be funny to see the reaction.
Probability of legitimacy: 1:+Inf
There are no unaccounted sources of new hashes added to the network. Unless they are lying about their "satisfied customers".