True, currently would be a bit of a mess but can you imagine if consoles had a display port as well and you could pair a controller or keyboard or whatever directly to your TV and use it to pass through data to either a console or PC connected to it without having to change anything from it being able to use the TV as USB Bluetooth adapter.
Really I just seem to want a higher PC monitor as a TV I guess, but universal remotes could really be universal with a setup like that.
But it ends up being a huge overhaul of everything we currently have and with no easy single cable swap solution really for lots of devices. And therefore lots of people hating it and why we stay with HDMI for that and other reasons.