I’ve long dreamed of doing all my gaming on PC — a single platform that’s easily upgradeable and lets me play my overstuffed Steam library wherever and however I like. The Steam Deck is a fantastic handheld, but for my living room, I want something more powerful that works as well on my TV as it does at a desk. Believe me, I’ve tried. Gaming laptops are noisy and awkward, desktops are too chunky, and Windows is annoying to navigate without a keyboard and mouse. I had hoped that…