I would say you run the 23/24 draft, but with one caveat that could be done a couple of ways:
1. Round one or the final round is a wild card round where you can draft a player of your choosing from any point in league history.
2. One spot is made available for any player you choose (you could end up with 8 people having a 66-67 Wilt)
A few leagues I remember in the past that were fun, or interesting:
1. The countdown league (one player in the 9.99M-9.0, one player in the 8.99-8, and so on)
2. The Poison Pill league (every team gets one piece of sim poison that they must start and play all of their minutes - think AI, Isiah, Cousy, etc...)
3. Create Your Own Theme League (everyone has to announce their theme in this league and be 100% beholden to the rules ie. I did this once and I created the Cornbread, Earl, and Me team. So Monroe, Maxwell, and players that had the name Eric, Michael, or Malone...my full name feel free to find me on LinkedIn...everyone on the team had to fit into those strictures.)