Like many of you, at least I'm guessing, I prefer PC games. Many of the ones that are specifically designed with the PC in mind tend to have deeper gameplay options and provide a better experience overall.
However, if you remember when rumble functionality came out for the N64 it was a pretty big deal. Now in 2014, PC players still don't have anything similar. Yeah, I know, nobody wants a mouse that has built-in rumble, but what about a keyboard that does? What about a vest or some other niche device that rumbles, provides hot/cold sensation, etc.? I'm aware of things like Oculus Rift, but that still only engages the senses of sight and sound as far as I'm aware.