GDC is just a week away (okay, Bungie's session is on the 28th, so a bit longer), and I've been reading the session description more carefully and doing a bit of extrapolation. I think I've come up with some fair predictions of what we might see or learn. Principally, I think we're going to see examples of taking core values of the game and turning them into gameplay features or environments. Some more minor predictions are player travel, economy, and hopefully Grognok. What are your predictions?