I just wish console games would offer full support for keyboard and mouse. I really dislike the sorts of UI gyrations they end up going through to make granular things like inventory management, gear customization and such work on a gamepad-dependent machine. There's no reason that the current generation of consoles can't manage that, and since so many games are released simultaneously for the PC as well, it's really nonsensical.
Also, for the ubiquitous 'but I want to sit on my couch and game' comments, you can sure do that with your PC, too. No instant installs, but with flexibility you get complexity, that's true.