I think though, if you've got the miner in a DC and it need a hardware power cycle you've got more problems than just reaching into the back of the rack (you've actually got to go to the DC or pay some dude to do it!
Just use a switchable PDU. They work great for home "farms" as well.
And anyway, DC costs are going to bite into the miserable ROI. Who would even think of doing that unless they had some free space?
Agreed.