MikeB on 02 January 2009
@ Darc Requiem
My guess is it would have an HD-DVD drive and more RAM probably around 640MB instead of 512MB.
More EDRAM (the 360's main bottleneck) and a harddrive (also for virtual memory) would IMO have been far more useful.
Note that HD DVD drives at the time (including the 360 HD DVD) drive is half as slow as the PS3's Blu-Ray drive and not even ready for mass production in time (it would have required a lot of investments).
More system RAM is always useful (if doing PC ports), but higher bandwidth is usually far more effective for a console (compare with the Neo Geo's potential for its time). Heavy streaming is IMO really the way to go for modern console games.