Mirror's Edge 2, since the people who should actually be developing that game are NEVER going to do it.
Mirror's Edge was a such a good game to me. I got it on a fluke, just because I liked the fact that there was a girl on the cover, and it turned out to be a lot of fun. I didn't really notice the short length (but I don't really have the time to sit down and play games hour after hour, sadly) and certainly dying repeatedly and having a few rage-quits elongated the play time. But even the trial and error gameplay wasn't a deal breaker for me. Dying repeatedly was easily forgiven by the satisfaction that came with finally pulling off the section successfully. I'm also not easily frustrated.
I don't know. I could go on forever. The point is, Mirror's Edge is definitely one of my favorite games. And I believe that, for all those people who thought it was flawed, what better way that to fix those flaws than in a (tah-dah!) sequel? Cause even those people who had their niggles still thought it was a good game!
Come on DICE. Come on EA. You probably HAVE these hypothetical funds. Make Mirror's Edge 2 dammit!