The biggest thing, for me, is hope that PS1/PS2 games on PS4 (if this is a done deal) don't have the lag that they had on the PS3. Really, that just killed backward compatibility for a number of games, and having that gone would be a wonderful thing,
I really think it was something wrong with the PS3 itself, because PS1 games on PSP/Vita don't have the lag problem.
I really think it was something wrong with the PS3 itself, because PS1 games on PSP/Vita don't have the lag problem.