I remember a clear improvement in the legibility of things like onscreen scoreboards in sports broadcasts. In the NTSC era I would squint at the TV trying to figure out if the score was 16 or 18 for a football game, and for a basketball game you just had to keep track of it in your head since the scoreboard wasn’t even persisted onscreen. Other things, like telling different players apart, are also easier these days (you can even make out their facial features in a wide shot!)