>>278038359
>Lower body tracking is basically impossible
No, it's just expensive. Neos supports 10 point tracking, but that'd cost you $700 for just the Vive trackers. Most people don't even want to shell out $300 for three of them since they don't really affect gameplay in any way yet.
>I thought upper body controls would be pretty realistic by now.
They're fine for now, and you can buy Index controllers or try to run a janky Leap Motion setup if you really want finger tracking in the games that support it. There's not really any gameplay reasons to need it yet though, so purely for immersion.