-full 1080p.
This is what I mainly want. Games being <720p and scaled up is just not acceptable.
-Same day digital release
not really for me since I have data caps where I live, but for everyone else in the country, it would be great.
-Support for gaming headsets.
The 360 has absolutely horrible support for "gaming headsets". USB headset support would be a great addition.
What do you think are "must have" features that would greatly disappointing if they were excluded.
P.S. I know PCs are king/don't have these problems/console peasants/blah blah blah