I used a tv as a monitor for a while and it was great -- but there is one problem with single monitor setups -- screen sharing/recording. If the app you're using lets you select a portion of the screen to share, that's great. But something like Slack you either share an app window, or the entire screen. This is very annoying in a single monitor setup. It would be amazing if you could select a part of your screen and tell the OS "treat this area like a separate monitor".