With Bo Boroski's retirement, there are currently no basketball referees that have the B1G as their primary conference who have ever worked a Final Four. (This is per Goodman's tweet, I didn't review the list.) It also doesn't consider the fact that with UCLA and USC coming along, we'll add some west coast officials soon.
I'm as critical of the NCAA's selection process as anyone, so it's a bit of a flawed metric, but I found it interesting nonetheless. Hopefully the conference can get some young blood into the B1G ranks.