Its been a while since the world had a new sport. All the current international ones had rules developed 100-200 years ago. My ideas is that a committee from all interested countries be convened to come up with a new sport. It would ideally involve fitness for youth to practice - to get away from their screens. not too much space so that kids in overcrowded neighbourhoods can play no special advantage for people over a certain height, so that more people are a chance of reaching top level. I am thinking something like a cross between handball and soccer and basketball and sepak takraw