Where even to begin ... Well, let's start with what I have right in front of me.
Warcraft. Warcraft as in the strategy game. World of Warcraft butchered the whole story, and killed off every villain there is, and basically changed the whole tone of the game. But if they really try, I'm sure they can make a new strategy game. It might have to be set some centuries in the future, though. Or, hell, a prequel?
Dark Messiah of Might and Magic. I don't understand why this game got so mixed scores. It's just amazing to me, one of my favorite games ever, and probably the most underrated one I know of. With just about the best combat system I've ever seen, and a story that's both a bit more original than most ( at least in the ways that matter ), it's one game I'd like to see a sequel to. Just as long as it keeps the good stuff, and fixes some of the bad. Because there was that, too.
Dragon Age. It needs a proper sequel - not some degenerate action RPG.
... and before I go completely mad, give me a new Elder Scrolls game. I deserve it. I've been good.
Also, George R. R. Martin needs to hurry up and finish A Dance With Dragons. That is all.