My must would be better online services (PSN). When I say that I mean auto updates, auto downloads etc. I hate when I'm ready to play online and surprise! a mandatory 2 hour update is required.
I also think it would be cool if they had an upcoming section online, like for example...Coming May 14th...Demo for MGS: Ground Zeroes...just click on it and it will auto download as soon as it's available. Then next time you fire up the PS4...voila! new demo ready to play!
And last but not least...I hope it's easy to develop for...I don't want sloppy seconds next gen...
What are all of your opinions???