It would be very useful if those who want the "estimated pay per block" number back could explain what they get out of it.
The second way I used it was to estimate how long to hit a certain goal. yes, I could use a mining calculator for that. This made it easier since I knew how many blocks would need to be solved in order to earn a certain amount specifically at Bitminer.
I was doing the same thing. I would knew how many blocks (plus minus 1) I needed to reach my cash out.