You forgot sword-play games, which could really benefit from a controller that hasn't hit market yet (see Clang and STEM).
All of these game genres exist on consoles, and all of them are most typically played with a game-pad. While specialist devices exist for most genres of games, the gamepad is the default generalist that plays them all. The steam controller promises to be a better generalist. Don't underestimate that.
What sword play games are there? The only ones I can think of off the top of my head are Red Steel, and Skyward Sword. And both were made in service of the wii.
All of these game genres exist on consoles, and all of them are most typically played with a game-pad. While specialist devices exist for most genres of games, the gamepad is the default generalist that plays them all. The steam controller promises to be a better generalist. Don't underestimate that.