Let's try and make it somewhat realistic xD But if you want to fantasize then by all means do so :)
What I would like to see is
Sony
Uncharted Trailer
New Vita Game
Order: 1886 Gameplay
Microsoft (Confirmed Quantum Break and TitanFall)
Black Tusk Studios Game
Rare Ltd's 3rd XBO Game
New Ip from one of the new Studios
Nintendo
New Ip Please :)
Zelda
Smash Bros Gameplay
Third Party
Epic Games Announcement
Fallout 4
Metal Gear Solid V