Valve’s Steam Controller presents itself as one of the best options for playing games on PC, specifically (but not limited to) games on Steam and through Steam Input. With tight integration into the platform, tons of customization options, and the ability to easily play controller and traditional keyboard- and- mouse titles alike, there’s little to suggest that this isn’t the one controller that does it all. Except that, currently, some firmware quirks are severely holding it back. One of the…