Exactly what the title says. What type of game would you like to see that haven't been done yet or haven't been done correctly? Or maybe if you want to make a game, what would it be? I'll start by saying a legitimate Advance War game. I know a Mecho Wars and Battle for Wesnoth but it doesnt feel as good or as crisp as Advance Wars.
The app store is seriously lacking in the RTS and survival horror genres. The scarce hits are not enough. Especially survival horror. There's no good silent hill/resident evil games, and the mobile version of silent hill was pretty bad.