What I want is Steam OS. Who needs the rest of the operating system? Never going to happen but I wish it would.
Could end up with some SERIOUS DRM though.
If the government ever gets around to providing funding for a decent fibre infrastructure, to ensure low latency/jitter reliable internets, services like OnLive could be your saviour. BT are a investor in them but ADSL just can't deliver the necessary quality of service.
You could end up playing TF2 on your phone with OnLive using a bluetooth keyboard and mouse.