I'd love to see a regulator mandate that computers like the iMac that have built in screens must have HDMI ports that allow them to be used as monitors.
This would be great for the consumer and prevent a lot of ewaste as people can use obsolete computers as monitors well past their useful lifespan as a monitor.
HDMI might be a bit more complex, but displayport should be doable since most devices use embedded displayport (eDP) anyway for their built in displays. I'm guessing the main cost would be adding a switching chip for switching between external and internal source.
This would be great for the consumer and prevent a lot of ewaste as people can use obsolete computers as monitors well past their useful lifespan as a monitor.