Like the title says, is there any major franchise or IP which still hasn't graced the App Store with its presence that you'd love to see make an appearance (whether in the form of a port or of a new game altogether)? Personally, I've been watching the classic Indiana Jones movies lately, and would love to see a proper Indy game on the App Store. A port of Tomb of Atlantis, Staff of Kings or the Emperor's Tomb would be my ideal scenario. The same could be said for James Bond, who's got a game made by Glu coming next year, but a port of Goldeneye (unlikely as it is) would be a dream come true for most of us, I believe Come on, let's hear yours!
I'd love to see the Indiana Jones adventure games, any of the Lucas Arts adventure really. The first medieval total war game, the close combat series, I'd like the guys who did Ascendancy to continue their catalogue with the Tone Rebellion...