I’m not into sports myself, but I hear a lot of people complain about predatory subscriptions to professional sport streaming servicies, intrusive gambling ads, etc. Organize free internet streaming of old broadcasts right as they enter public domain (50 years after broadcast in UK) and pretend they are going live, do discussion, bar cheering, all the things sports people do to entertain themselves, for free.
It’s not just knowing the outcome, it wouldn’t be nearly as fun of a viewing experience. The quality of play is often really bad by modern standards, to say nothing of the video and audio quality.
This is a big one. The games are going to look, and sound like shit. Good luck following a puck in an NHL game pre-HD.