I don't know, I've never tried.
For a ~$200 streaming box, that respects privacy, does 4K, AND does torrenting, you're basically looking at a Linux PC. Those come in many flavours; you can even start with a Raspberry Pi. I'm not sure about "ten foot interfaces" though; that is, interfaces that can be used with a remote from your couch. That said, they make remote-sized keyboards with track pads, and I'm sure you can do just about anything with Linux.