this is simple, what game would you like to see made?
I would like to see a new Soul Calibur with the kind of created character story line from 3, a Co-op battle system(kind of like tag battle in DoA), A little more in-depth character creation(wider variety of facial choices, being able to choose your height, etc.)
The next Elder Scrolls game should(in my opinion) contain more than one province, you should also be able to import your character from Oblivion, being able to use pc made content on the console version of the game.
A second Left 4 Dead, with character creation(yay for custom characters!) with a wide variety of customization. Create a level maybe? something like what the people at Far Cry(1st one, 2nd one's level maker sucked) did with their multiplayer.
A new Cthulhu game made by Bethesda(Call of Cthulhu: Rise of Madness?) because everyone enjoys the Cthulhu mythos.
A european based warriors game(Dynasty) you could do the roman empire, or medieval times, I have no idea what you'd call it, but it would be awesome.
World War II online for consoles
Fable 3 should have better character customization(in 2 you could really only choose male or female, and everyone basically looked the same) a Co-op mode thats actually co-op...like being able to use your characters instead of stupid looking henchmen.
A World War I video game, trench warfare would be fun...for awhile.
A game where you get to beat up Corporate big-wigs with baseball bats, maces, and any other hard blunt object.