For PC gaming to actually be viable for the living room, you need three things:



Linux instead of Windows—unless Microsoft is willing to make a version of Windows that boots into a game launcher. But probably Linux since Linux can be customized for specific hardware. 


A good controller with a trackpads and assignable buttons. Valve got really close with the Steam controller but it lacked a right analog joystick. 


Some way to access a keyboard, either virtually or with physical buttons. 

Many PC games run well on TVs nowadays, by the way.