I'm a big fan of Powerball, Namco's futuristic sports video game from 1991 for the Sega Genesis. The game takes place in 2010, and is a combination of football, basketball, soccer, ice hockey, rugby, Aussie Rules football, team handball and MMA. My proposed concept would be a modern re-imagining, with a different take on the timeline from the sport in this game (USSR exists in this game), and structured, deeper concepts in terms of uniforms they'll be using.