The purpose of this photo was to show us, Snowden, and everyone watching they know where he is. We found that location within an hour or two.
You will never get a positive ID out of this photo, you are just wildly guessing for fun at this point. The resolution is no where near high enough to actually confirm any of your guesses.
In reality, you could just create graphics with an arrow pointing at every conceivable pair (IDEN +1) of people in the picture, and flood the board, then wait for Q to confirm one. Then even if Q did confirm, so what? There would be literally no change in value of the pic once you label 2 pixel blurs in the picture, either to us or to the public.
Do you see how when you use common sense, the task starts to seem pointless?
"Finding" which pixel you think Snowden is was never the point.