Towards the end of the event, I was particularly hitting it off with two SuperBot guys and they were telling me essentially everything I asked, except anything about the final boss, but I constantly keep regretting how I didn't say anything about David Hayter being mentioned in Eric Landin's Tweet. We even discussed one employee's hate for Activision. "I would never, ever, ever work for Activision!" said a SuperBot employee.
I'm not sure what the big question is; Snake could just be in Raiden's ending, which would make sense, hence the need for his voice.
Interesting stuff here.
I wish they would do more panels and dev diaries, so that they can publicly answer all of the questions we have, and go into great depth with the ins-and-outs of the development and progress of the game.
I guess it's kind of late now though, as the game is less than 30 days away.
But nonetheless, good find OP.