Just read through your post, in the mean time. It's really an interesting theory that the badge being handed over to Niko. Also, the deepthroat guy caught my attention back in March. He's surely someone behind the curtains, heard that he always uses proxy, so no one can trace him. :p
Edit: Just found out, he came online
on this Sunday after long disappearance, just hours before the trailer announcement! Gotta admit, he does seem to have R* connection.