I dont believe that the size of games will go up so fast but i do believe it will eventualy, i see each game of a certain type like the sports game as an upgrade from the previous one, so each year it will go up a bit more in space, but maybe bluray was something more meant for the next gen (as in ps4 wii2 or whatever will come out then), and as for graphics although its nice i dont see a huge difference between the different high definition qualitys, so i think 360 wont have people leaving because of graphics and i dont think the graphics quality has ever played a big role on the success of a console, not when the difference between each console is minimal. I believe bluray will be the futur of gaming but it might not be until next gen that it makes an impact.